Discover the fastest and most reliable dns servers with nslookup: Benchmark Latency and Reliability 2026

Discover the fastest and most reliable dns servers with nslookup. Quick fact: choosing the right DNS server can shave milliseconds off your page load times and improve your overall browsing experience. In this guide, you’ll get a practical, hands-on approach to finding and testing DNS servers, plus real-world tips to keep things snappy.

Quick-start checklist:
- Understand what nslookup can and cannot do for DNS testing
- Compare public DNS providers by response time, reliability, and privacy
- Run simple nslookup tests to gauge latency and consistency
- Document findings and create a baseline for future checks
- Protect yourself with privacy-friendly options and fallback strategies

What you’ll learn

How to use nslookup to query DNS servers and measure response times
A curated list of fast and reliable DNS servers you can start using today
Real-world factors that affect DNS performance, including geolocation and caching
How to verify uptime and reliability with regular tests
Practical tips to balance speed, privacy, and security

Section overview

Why DNS performance matters
How nslookup works under the hood
Fast DNS servers to consider with quick tests
How to run your own nslookup tests step-by-step
Understanding latency measurements and what’s “good”
Reliability and uptime considerations
Privacy, security, and safety tips for DNS
Real-world testing case study
Frequently asked questions

Why DNS performance matters
DNS speed influences the time to first byte for many web requests. If a user’s browser can’t resolve a domain quickly, they experience delays before any content loads. DNS also affects mobile users on spotty networks; a fast resolver can dramatically improve perceived performance. In 2024, studies showed that fast public DNS resolvers can reduce page load times by up to 10-20% on average for users who switch from ISP-provided DNS. While results vary by location and network, the takeaway is clear: faster DNS resolution translates into snappier experiences.

How nslookup works under the hood
nslookup is a simple command-line tool that asks a DNS server for information about a domain. It shows you details like:

Server used for the lookup
The queried domain
The response time in some environments, you’ll infer it from the prompt
The DNS record type A, AAAA, CNAME, MX, etc.
The actual IP address or hostname returned

What you’ll typically measure with nslookup

Latency to the DNS server time from your request to the response
Reliability whether the server consistently answers
The correct record returned no spoofed or cached junk
Additional records if you query for more than just A records

Fast DNS servers to consider
Below are well-known, fast public DNS providers. I’ve included rough regional notes and a quick sanity check you can run with nslookup. For the purpose of this guide, you can start with a couple of primary servers and add others as you test.

Cloudflare DNS 1.1.1.1
- Pros: Very fast, strong privacy stance, good uptime
- Cons: Some enterprise blocks or content filtering tools may rely on different resolvers
- Quick test idea: nslookup example.com 1.1.1.1
Google Public DNS 8.8.8.8
- Pros: Very stable, broad global coverage
- Cons: Privacy-conscious users may prefer providers with stricter logging controls
- Quick test idea: nslookup example.com 8.8.8.8
Quad9 9.9.9.9
- Pros: Privacy-focused, security filtering at DNS layer
- Cons: Filtering can occasionally block legitimate domains if misconfigured
- Quick test idea: nslookup example.com 9.9.9.9
OpenDNS 208.67.222.222 and 208.67.220.220
- Pros: Good reliability, useful parental controls
- Cons: Some users report slower responses in certain regions
- Quick test idea: nslookup example.com 208.67.222.222
DNS.Watch 84.200.69.80 and 84.200.70.40
- Pros: Privacy-oriented, straightforward
- Cons: Fewer data centers than the big players
- Quick test idea: nslookup example.com 84.200.69.80

Note: DNS performance can be highly location-dependent. Your fastest DNS server may differ from someone else in another country. The best approach is to test from your location.

How to run your own nslookup tests step-by-step
Step 1: Pick a target domain

Start with a commonly used domain, like google.com or your own site’s domain.

Step 2: Test against multiple DNS servers

Run nslookup for each server you want to test. You can put the domain in quotes to ensure accuracy.

Commands examples:

nslookup google.com 1.1.1.1
nslookup google.com 8.8.8.8
nslookup google.com 9.9.9.9
nslookup google.com 208.67.222.222

Step 3: Record the results

Note the IP address returned and the approximate response time. Some shells show time, others you’ll estimate based on your environment.

Step 4: Compare latency and reliability

Create a simple scorecard: latency average, consistency, and whether the answer matches the expected A record.

Step 5: Consider caching effects

If you’ve recently queried a domain, results might come from your local cache rather than the remote resolver. Run tests in an empty cache or after clearing DNS cache.

Step 6: Repeat from different network conditions

If possible, test from mobile data vs. a wired connection, or from a different ISP, to see how it affects performance.

Understanding latency measurements and what’s “good”
Latency targets can vary, but here are practical benchmarks:

Under 20 ms: excellent
20-40 ms: very good
40-80 ms: good
80-150 ms: acceptable
150+ ms: could cause noticeable delays

If you’re seeing 100–200 ms to a DNS server, that could be a bottleneck in some pages’ load times, especially on high-latency networks or long-distance connections. Aim for a DNS provider that consistently returns sub-50 ms from your location.

Reliability and uptime considerations

SLA and uptime: Check provider SLAs; public resolvers usually target 99.9%+ uptime.
Anycast routing: Many big providers use Anycast, which improves resilience by routing you to the nearest copy.
Any obvious outages: Keep an eye on provider status pages during regional outages for example, major ISP DNS outages happen less often with global providers, but they do occur.

Privacy, security, and safety tips for DNS

Privacy: Prefer providers that log minimally or offer DNS-over-HTTPS DoH or DNS-over-TLS DoT if your devices support it. While DNS privacy helps, ensure you know what data is logged and for how long.
Security: Some providers offer filtering for malware or phishing domains. If you want this, test to make sure legitimate sites aren’t blocked accidentally.
Security posture: Disable or avoid using DNS services that are known to log heavily without transparency. Review privacy policies.
DoH and DoT: If you’re comfortable, enable DoH/DoT on your devices or router to encrypt DNS queries, reducing eavesdropping on public networks.

Real-world testing case study
Let’s run a practical, quick test scenario you can replicate. You’re on a home Wi-Fi network and want to compare three providers: Cloudflare 1.1.1.1, Google 8.8.8.8, and Quad9 9.9.9.9. You’ll perform nslookup for a few domains example.com, google.com, and a couple of your own sites and log the response times.

Test results sample, numbers will vary by location:
- Example: nslookup example.com 1.1.1.1 -> response time 18 ms
- Example: nslookup example.com 8.8.8.8 -> response time 25 ms
- Example: nslookup example.com 9.9.9.9 -> response time 32 ms
- Repeat with google.com and a personal domain
Observations:
- Cloudflare often edges ahead in latency for many users
- Google remains a solid fallback with broad global coverage
- Quad9 offers privacy-focused filtering with decent performance
Practical outcome:
- For most users, setting your router or devices to use 1.1.1.1 as primary and 8.8.8.8 as secondary often yields fast results
- If you want extra privacy or filtering, try Quad9 and test if it impacts your load times

More tips to optimize DNS performance

Set a primary and a secondary DNS
- If your primary account is slow or flaky, your secondary will kick in, reducing downtime
Use a local caching resolver for your home network
- If you run a home router with DNS caching, it reduces the need to reach public resolvers for every query
Periodically re-test
- DNS performance can change due to network routing changes, maintenance, or outages
Consider DoH/DoT on modern devices
- This helps protect privacy on public networks, though it may introduce small performance overhead in some cases
Check for IPv6 considerations
- If your network prefers IPv6, ensure your DNS resolver supports IPv6 AAAA records to avoid IPv6-related delays

Table: Quick comparison of popular DNS providers high-level

Provider: Cloudflare 1.1.1.1
- Privacy: High
- DoH/DoT: Yes
- Global latency: Very good
- Uptime: Very high
Provider: Google 8.8.8.8
- Privacy: Moderate
- DoH/DoT: Yes
- Global latency: Excellent
- Uptime: Very high
Provider: Quad9 9.9.9.9
- Privacy: High
- DoH/DoT: Yes
- Global latency: Good
- Uptime: High
Provider: OpenDNS 208.67.222.222
- Privacy: Moderate
- DoH/DoT: Not universally supported older setups
- Global latency: Good
- Uptime: High
Provider: DNS.Watch 84.200.69.80
- Privacy: High
- DoH/DoT: Limited support
- Global latency: Moderate
- Uptime: High

Best practices for consistent performance

Use at least two resolvers
- Primary and secondary reduce outage risk
Test from multiple locations
- If you have remote workers or family in other regions, they may see different results
Keep router firmware updated
- Some routers improve DNS performance with firmware updates
Consider enterprise-grade or ISP-specific offerings if you’re running business-critical apps
- For businesses, dedicated enterprise DNS services may offer better SLAs

Common mistakes to avoid

Assuming the fastest DNS is the same for everyone
- Geographic and network differences matter
Relying on a single test
- Do several tests at different times and under different network conditions
Ignoring DoH/DoT implications
- Encrypted DNS helps privacy but can complicate enterprise network monitoring

Frequently asked questions

How do I measure DNS performance with nslookup?
- Use the query time or infer latency by timing how long nslookup takes from your prompt to the response, and compare across providers.
Can switching DNS improve gaming latency?
- Yes, sometimes. DNS resolution affects only the initial handshake, not the game server’s ping, but faster resolution can shave off a bit of the total wait time.
Is DoH safer than DoT?
- Both encrypt DNS queries. DoH runs over HTTPS, while DoT uses a dedicated TLS connection. DoH can be easier to route through existing web traffic systems; DoT is sometimes preferred for enterprise controls.
Are public DNS providers trustworthy with my data?
- It varies. Read each provider’s privacy policy. Some providers anonymize logs quickly, while others may retain data longer. Do your due diligence.
Will changing DNS affect my streaming apps?
- In most cases, no. Some streaming services have geo-based restrictions; DNS changes generally don’t bypass those, and some providers offer content filtering that could affect access.
How often should I test DNS performance?
- Quarterly is a good baseline for personal use; for businesses or high-traffic apps, monthly or weekly checks during outages is prudent.
Can DNS speed impact mobile data usage?
- Indirectly yes. Faster DNS reduces the time to resolve domains, which can help in time-to-first-byte and overall page load on flaky mobile networks.
Does DNS caching affect performance indefinitely?
- Caching is designed to speed up repeated queries. However, TTL values control how long data is cached, so stale data can cause issues if not refreshed.
Should I use a VPN to improve DNS privacy?
- A VPN provides network-level privacy but can slow down connections. It’s not a DNS solution by itself; combine VPN with Encrypted DNS if privacy is your goal.
What’s the cheapest way to test DNS speed?
- Use built-in nslookup or dig on your device with several public resolvers. It’s free and quick to compare.

Useful resources and references

DNS benchmarking guides – dnsperf.org
Public DNS operator status pages – Cloudflare status, Google Cloud Status Dashboard
DoH/DoT guidance – Mozilla DoH documentation, Let’s Encrypt DoH guidance
Privacy-focused DNS discussions – en.wikipedia.org/wiki/Domain_Name_System#Privacy
General DNS education – en.wikipedia.org/wiki/Domain_Name_System

Appendix: Quick command cheatsheet

nslookup example.com 1.1.1.1
nslookup example.com 8.8.8.8
nslookup example.com 9.9.9.9
nslookup -type=MX example.com 1.1.1.1
nslookup -type=AAAA example.com 1.1.1.1

Closing note
If you’re just starting out, pick two resolvers 1.1.1.1 and 8.8.8.8 and test from your primary location for a week. Keep notes on latency and reliability, then gradually add an additional provider for redundancy. With a little bit of testing, you’ll have a robust DNS setup that keeps your browsing and apps feeling fast and smooth.

Table of Contents

Yes, you can discover the fastest and most reliable dns servers with nslookup. This guide gives you a practical, no-fluff approach to using nslookup to compare popular resolvers, collect meaningful performance metrics, and apply the findings to your devices. You’ll get a step-by-step workflow, easy-to-read formats, real-world tips, and a actionable plan you can implement today. Below you’ll find a mix of checklists, command examples, tables, and quick-reference sections to keep things simple and actionable.

Useful URLs and Resources:
DNSPerf – https://dnsperf.com/
Google Public DNS – https://dns.google/
Cloudflare DNS – https://1.1.1.1/
Quad9 DNS – https://quad9.net/
OpenDNS – https://www.opendns.com/
Verisign Public DNS – https://www.verisign.com/

What nslookup is and why it helps

nslookup is a command-line tool that lets you look up DNS records for a domain from a specific DNS server. It’s incredibly handy for quick diagnostics, verifying that a resolver is returning the expected IP addresses, and, with a little extra effort, comparing the performance and reliability of multiple DNS servers.

Pros of nslookup:
- Simple to use and available on most systems Windows, macOS, Linux.
- Lets you force queries to a particular DNS server.
- Useful for checking A, AAAA, MX, NS, TXT, and other record types.
Limitations:
- It doesn’t natively measure latency. you’ll need to time commands or use external tools to estimate performance.
- It doesn’t encrypt queries no built-in DNS-over-HTTPS or DNS-over-TLS, so it’s best for quick tests rather than privacy-focused use.

With the right workflow, nslookup becomes a lightweight, repeatable way to gauge which DNS providers deliver faster, more reliable answers in your region and for the domains you care about.

How to measure DNS performance with nslookup

Follow this practical workflow to compare multiple DNS servers using nslookup. It’s focused on speed, reliability, and consistency.

Prepare test servers to compare
- Google Public DNS: 8.8.8.8 primary, 8.8.4.4 secondary
- Cloudflare DNS: 1.1.1.1 primary, 1.0.0.1 secondary
- Quad9 DNS: 9.9.9.9 primary, 149.112.112.112 secondary
- OpenDNS: 208.67.222.222 primary, 208.67.220.220 secondary
- Verisign Public DNS: 64.6.64.6 primary, 64.6.65.6 secondary
Basic commands you’ll use
- Query an A record:
  - nslookup example.com 8.8.8.8
- Query a different server:
  - nslookup example.com 1.1.1.1
- Query a different record type MX, AAAA, TXT:
  - nslookup -type=MX example.com 8.8.8.8
  - nslookup -type=AAAA example.com 8.8.8.8
- Time your queries to estimate latency Linux/macOS example:
  - time nslookup example.com 8.8.8.8
- On Windows, you can measure with PowerShell:
- Measure-Command { nslookup example.com 8.8.8.8 } | Select-Object TotalMilliseconds
How to interpret results
- Latency: Look for the lowest average response time across multiple domains.
- Reliability: Check if queries consistently resolve with no timeouts.
- Consistency: Run 5–10 quick tests per server and average the results.
- Record type variety: Do A, AAAA, and MX lookups resolve correctly? This helps catch misconfigurations.
A simple, repeatable testing template
- Domains to test: google.com, example.com, github.com, your primary business domain
- Run per server the following sequence 5–10 times each:
  - time nslookup google.com 8.8.8.8
  - time nslookup github.com 1.1.1.1
  - time nslookup example.com 9.9.9.9
- Collect results in a small table with: Domain, Server, Avg Time ms, Success Rate, Notes

Sample results template fill in with your numbers

Domain: google.com Discover the DNS Server IP on Linux a Step by Step Guide to Find DNS Addresses and Verify Connectivity 2026
- Server 8.8.8.8: Avg Time 12 ms, Success 100%
- Server 1.1.1.1: Avg Time 9 ms, Success 100%
- Server 9.9.9.9: Avg Time 14 ms, Success 100%
Domain: example.com
- Server 8.8.8.8: Avg Time 10 ms
- Server 1.1.1.1: Avg Time 9 ms
- Server 9.9.9.9: Avg Time 11 ms
Quick tips for more precise measurement
- Run tests at different times of day to account for ISP routing changes.
- Include both IPv4 and IPv6 if your network supports it.
- Run tests on multiple devices if you have a home or office network to see regional variance.

Best DNS providers to test in 2026

These are the major players frequently used by homes and businesses. The “best” choice depends on your priorities: speed, privacy, uptime, or extra features like parental controls or DNS security.

Cloudflare DNS 1.1.1.1 — Known for speed and privacy. Claims to be the fastest widely available resolver. Privacy-forward approach with a policy to not log personal data longer than 24 hours.
Google Public DNS 8.8.8.8 / 8.8.4.4 — Very reliable and globally distributed. Excellent uptime and fast responses for many regions, though privacy policies differ from Cloudflare.
Quad9 9.9.9.9 / 149.112.112.112 — Emphasizes security by blocking known malicious domains at the DNS layer. Good latency and strong privacy protections.
OpenDNS 208.67.222.222 / 208.67.220.220 — Offers filtering features and parental controls in addition to standard DNS services. Great for families and small offices.
Verisign Public DNS 64.6.64.6 / 64.6.65.6 — Stable and straightforward, with a long-standing presence in the DNS space. Good baseline performance.
Local ISP DNS varies — Your ISP may be optimized for your region, but results can vary and may include less privacy.

Quick wins from the numbers
- If you see consistently lower latency on Cloudflare and Google than on others, consider using one of those as your primary resolver.
- If you need built-in domain filtering or parental controls, OpenDNS is a straightforward option.
- If security features like malware domain blocking matter, Quad9 is a solid choice to test first.

How to switch DNS servers on your devices

Changing DNS settings is one of the fastest wins for noticeable performance and privacy improvements. Here’s how to do it on common platforms. Discover the Power of Verified Discord Communities How to Add Verification to a Discord Server 2026

Windows
- Open Control Panel > Network and Internet > Network and Sharing Center > Change adapter settings.
- Right-click your network connection > Properties > Internet Protocol Version 4 TCP/IPv4 > Properties.
- Use the following DNS server addresses:
  - Preferred DNS server: 1.1.1.1
  - Alternate DNS server: 8.8.8.8
- Repeat with IPv6 if you use IPv6 e.g., 2606:4700:4700::1111 for Cloudflare.
macOS
- System Settings > Network > Your connection > DNS.
- Click “+” to add 1.1.1.1 and 8.8.8.8 or any preferred pair. remove old entries if necessary.
Linux
- NetworkManager: Settings > IPv4/IPv6 > DNS. add 1.1.1.1, 8.8.8.8.
- /etc/resolv.conf temporary: nameserver 1.1.1.1. nameserver 8.8.8.8
- systemd-resolved users: resolvectl dns eth0 1.1.1.1 8.8.8.8
Mobile iOS/Android
- iOS: Settings > Wi‑Fi > i > Configure DNS > Manual > add 1.1.1.1, 8.8.8.8
- Android: Settings > Network & internet > Advanced > Private DNS > Private DNS provider host name e.g., dns.google

Tips for choosing a primary vs. secondary DNS

Use a primary for speed and a secondary as a fallback.
If privacy is a priority, pick Cloudflare or Google as primary and add the other as a secondary.
For families needing content filtering, consider OpenDNS as a secondary option.

DNS performance metrics and why they matter

Beyond raw latency, other factors decide how good a DNS server is for you.

Latency and jitter
- Latency is how long a lookup takes. Jitter is the variability in response time. Lower is better, especially for interactive apps.
Uptime and reliability
- Consistent responses without timeouts are crucial for a smooth browsing experience.
DNSSEC validation
- Some resolvers validate DNSSEC to prevent spoofed responses. If this matters to you, test whether the server supports DNSSEC and how it behaves when validation fails.
Privacy and logs
- Some providers promise short or no-logging policies. Review their privacy statements to understand how long data is stored and what is collected.
DoH/DoT support
- DoH DNS over HTTPS and DoT DNS over TLS encrypt DNS queries to protect privacy. nslookup doesn’t provide encrypted queries, but you can test DoH/DoT with compatible tools.
Features
- Parental controls, content filtering, anti-phishing blocking, and analytics dashboards can influence your choice.

Tip: even a small improvement in latency can translate into a more responsive browsing experience, especially if your current resolver is older or poorly routed in your region.

Real-world tips, tricks, and caveats

Don’t forget caching
- Your operating system and apps cache DNS results. After you switch resolvers, clear DNS cache to see new performance numbers. On Windows, run ipconfig /flushdns. On macOS, sudo dscacheutil -flushcache. sudo killall -HUP mDNSResponder.
Test across multiple domains
- Some resolvers perform better for certain domains due to anycast routing or regional peering.
IPv6 matters
- If your network supports IPv6, test AAAA records as well. some providers handle IPv6 more efficiently.
Don’t rely on a single data point
- Do several repeated tests across different times of day to capture routing variability.
Security first
- If you’re browsing in high-risk environments, consider Quad9 security-focused or enable DNSSEC validation if your resolver supports it.
Consider DoH/DoT for privacy
- If privacy is a top priority, pair your DNS with DoH/DoT-capable clients or use a browser that supports encrypted DNS. nslookup alone won’t encrypt your queries.

Frequently Asked Questions

What is nslookup and what can I use it for?

nslookup is a command-line tool used to query DNS records from a specific DNS server. It helps you verify that a resolver returns correct IPs and DNS data, and it’s great for spot-checking during troubleshooting.

Can nslookup measure DNS performance?

Not directly. nslookup doesn’t display latency by default. You measure performance by timing nslookup commands or using a separate timing tool, then calculate averages across multiple queries and servers. Discover the real reason why your discord server is down and how to fix it fast 2026

How do I test multiple DNS servers with nslookup?

Pick a domain e.g., example.com and run queries against each server:

time nslookup example.com 8.8.8.8
time nslookup example.com 1.1.1.1
Repeat several times, record the times, and compute averages.

Which DNS servers are fastest in 2026?

Performance varies by region. In many places, Cloudflare 1.1.1.1 and Google Public DNS 8.8.8.8 tend to be very fast, but your mileage may vary due to local peering, ISP routing, and network conditions. Run your own tests with nslookup to know for sure.

How can I change my device to use a specific DNS server?

Change the DNS settings on your device as described in the “How to switch DNS servers” section. Use your preferred provider’s primary and secondary addresses.

Do DNS providers support DNSSEC, and why should I care?

Some providers support DNSSEC validation, which helps protect against certain types of DNS spoofing. If you rely on DNSSEC for security, check whether your chosen resolver validates it and how it behaves when validation fails.

Does nslookup support DNS over TLS or HTTPS?

nslookup does not encrypt DNS queries. If you need encrypted DNS, use a DoH/DoT-capable client or browser-based DNS encryption. nslookup remains a great tool for quick lookups and diagnostics. Discover the Secret How to Easily Look Up a Discord Server: Quick, Practical Guide to Finding Any Community 2026

What’s the difference between DoH and DoT?

DoH sends DNS queries over HTTPS, typically to blend with normal web traffic and avoid eavesdropping. DoT uses TLS directly on a dedicated DNS port. Both aim to prevent eavesdropping and tampering.

How can I improve DNS performance on a home network?

Use a fast, privacy-friendly DNS provider as your primary resolver.
Use a reliable secondary resolver for failover.
Ensure your router has a recent firmware and doesn’t inject extra DNS delays.
Consider enabling DoH/DoT in browsers or devices that support it for privacy and consistent performance.
Clear DNS cache after switching providers to observe true performance changes.

Should I always choose the fastest DNS server?

Speed is important, but you should also consider privacy, reliability, and features like parental controls or malware blocking. In some cases, a slightly slower resolver that offers stronger privacy and better uptime is a smarter long-term choice.

How often should I reevaluate my DNS provider?

Every 6–12 months, or whenever you notice slower page loads, more timeouts, or after major network infrastructure upgrades in your area. Re-run the nslookup tests with your updated environment to verify improvements.

Useful tips for ongoing optimization

Keep a short list of two or three DNS providers you’ve tested locally.
Periodically re-run a focused nslookup test once every 3–6 months to catch routing or infrastructure changes.
If you run a small business, consider combining DoH/DoT with a firewall policy that blocks known bad domains to add an extra layer of protection.
Use network monitoring tools that can chart DNS response times over time so you can spot trends and preempt issues.

Quick reference: commands you’ll use

Test A record against a specific server
- nslookup example.com 8.8.8.8
Test MX record against a specific server
- nslookup -type=MX example.com 1.1.1.1
Test AAAA record against a specific server
- nslookup -type=AAAA example.com 9.9.9.9
Switch to a different server mid-session
- server 1.1.1.1
Time a lookup Linux/macOS
- time nslookup example.com 8.8.8.8
Time a lookup Windows PowerShell
Measure-Command { nslookup example.com 8.8.8.8 } | Select-Object TotalMilliseconds

If you’re looking to optimize your YouTube content around this topic, you can structure videos as follows:

Short form: “3 Easy nslookup Tricks to Find the Fastest DNS” with quick demos showing how to test 2–3 providers and interpret results.
Long form: “Discover the fastest and most reliable dns servers with nslookup: Full Benchmark Guide for 2026” featuring a guided walkthrough, live testing from different regions, a downloadable results template, and a recommended configuration checklist.

By following this guide, you’ll have a solid, repeatable method to identify the fastest and most reliable DNS servers for your location and needs, all verified with nslookup-based tests. Discover the dns server name from an ip address the ultimate guide: DNS Lookup, Reverse DNS, and IP-to-Hostname Mapping 2026

Sources:

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