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Looking Glass TR EN
Public / connection IP
216.73.216.215
ASN
…
Latency to us
…
Waiting for query
Country Record
Türkiye Türkiye Kocaeli İsim Kayıt
ABD ABD Council Bluffs Google
ABD ABD Berkeley Google
ABD ABD San Francisco Cloudflare
Avustralya Avustralya Sydney Cloudflare
Rusya Rusya Moskova Yandex
Rusya Rusya Moskova Yandex
İsviçre İsviçre Zürih Quad9
ABD ABD Berkeley Quad9
ABD ABD San Francisco OpenDNS
ABD ABD New York OpenDNS
Kıbrıs Kıbrıs Lefkoşa AdGuard
Almanya Almanya Düsseldorf DNS.SB
Almanya Almanya Frankfurt Quad9
Fransa Fransa Paris FDN
ABD ABD Fremont Hurricane Electric
Tayvan Tayvan Taipei Quad101
Çekya Çekya Prag DNS4EU
Kanada Kanada Ottawa CIRA
Çekya Çekya Prag CZ.NIC

Global DNS Check

DNS Kontrol is a free DNS diagnostic tool that live-queries any domain’s DNS records through independent resolvers worldwide.

See DNS propagation on the map

DNS Check queries your domain’s current records against public resolvers in many regions. Locations that answer turn green; timeouts and offline servers stay grey. After a nameserver change, host move, CDN cutover or MX update, you can see at a glance whether the record is the same everywhere.

How to use it

1

Domain

Enter the domain, for example company.com

2

Record type

  • A website
  • MX email
  • NS nameserver
  • TXT SPF / DKIM
3

Lookup

Press Lookup. Country answers fill the list on the left; the map on the right updates with them.

Share copies a noindex snapshot link so a client or teammate can see the same result.

Which DNS records can you query?

This tool queries A, MX, NS, CNAME, TXT, PTR, CAA, SOA and SRV. Each type does a different job for the website, email, certificates, search engines and AI assistants. Below is what every record is and what it is for.

A A record

A: IPv4 address the website resolves to.

It is the record a visitor, Googlebot or an assistant such as ChatGPT / Gemini looks up first. A wrong or stale A record is the most common reason a site opens in one country and fails in another. If the crawler cannot fetch the page, indexing and brand answers break as well.

MX MX record

MX: Mail servers.

Tells the world which server should receive mail for the domain. During a host or Microsoft 365 / Google Workspace move, unfinished MX propagation can split or drop incoming mail. A missing MX stops delivery and can also stall domain verification.

NS NS record

NS: Authoritative nameservers.

These servers own the DNS zone. An NS change decides where A, MX and TXT are read from. Inconsistent NS answers mean different regions can see a different site, a different mail host or a different TXT proof. Broken NS stops crawlers and assistants from reaching the site.

CNAME CNAME record

CNAME: Alias / redirect.

Points one name at another. Typical uses are www to the apex, or a subdomain to a CDN or SaaS target. A bad CNAME breaks the subdomain, SSL validation and any assistant that cites that hostname.

TXT TXT record

TXT: SPF, DKIM, DMARC and domain verification.

SPF lists sending hosts, DKIM signs mail, DMARC sets policy; Google Search Console, Microsoft and ads panels also prove domain ownership with TXT. Missing or conflicting TXT sends mail to spam and blocks verification. Brand trust in search and AI answers depends on these records too.

PTR PTR record

PTR: Reverse DNS — IP address to name.

Outbound (SMTP) servers are expected to have a PTR that matches the A record. PTR lookups run against an IP address. A mismatch can cause rejection or spam-folder delivery.

CAA CAA record

CAA: Certificate authority authorization.

Limits which certificate authorities may issue SSL/TLS for the domain. A wrong CAA stops Let’s Encrypt or a commercial CA from issuing a certificate. Without TLS, browsers warn and crawlers or assistants may not treat the source as reachable.

SOA SOA record

SOA: Zone data.

Publishes the primary nameserver, serial and refresh timers. After an NS move, comparing SOA tells you which side of the cutover a resolver still follows.

SRV SRV record

SRV: Service records.

Publishes host and port for a service (Microsoft 365, SIP, XMPP and similar). A missing SRV breaks that service even when the website A record is correct.

Why DNS matters for SEO, AEO, GEO and AI search

Search engines, map packs and assistants such as ChatGPT or Gemini reach your site through DNS. A wrong A record, broken NS or missing MX can stop crawlers, drop mail and end a brand answer with “site unreachable”.

SEO

Google and Bing need the site to resolve globally to crawl and index it.

AEO (answer engines)

Assistants fetch the source over DNS; inconsistent records reduce trust.

GEO (generative search)

Regional answers follow what that region’s resolver sees.

AIO

AI agents and monitors use the same DNS path.

This tool compares the record across many locations so “it works for us, not for the customer” becomes measurable. Resolvers marked offline are never queried live.

Frequently asked questions

What is a DNS check?

DNS Kontrol is a free diagnostic tool that live-queries a domain’s DNS records on independent resolvers worldwide. It shows how A, MX, NS, TXT and other records resolve in each country — use it after a nameserver change, host move or email setup to confirm propagation.

What is the difference between local IP and public IP?

Your public (connection) IP is the address this site sees; provider and ASN data is based on it. Local IP is the private address on your home or office network. Some browsers hide it for privacy.

Are offline DNS servers queried?

Yes. A live lookup queries every active location. If there is no answer the row stays grey. Background health checks only update the status shown in the admin panel.

Why does DNS propagation finish at different times in each country?

TTL, cached old records and each resolver’s refresh time differ. One country may already show the new IP while another still returns the previous record.

What do green, grey and orange mean on the map?

Green: the location answered and a record was found. Grey: timeout, offline server or no answer. Orange: the server answered but the record is empty or NXDOMAIN.

Does DNS affect SEO, AEO and AI search?

Yes. Google, Bing and AI assistants reach your site through DNS. A wrong A record, broken NS or missing MX harms crawling, indexing, email and brand visibility. Consistent global DNS is a basic health signal for SEO and AEO.

Are share links indexed by search engines?

No. Snapshot pages are published with noindex. The link is only for sharing a result; the tool pages themselves are the indexable URLs.

Which DNS record types can I look up?

A (IPv4), MX, NS, CNAME, TXT, PTR, CAA, SOA and SRV. Enter a domain, pick a type and query public resolvers in many countries at once.