DNS Lookup.
Every record. Every TLD. Every nameserver.
Paste a domain and get the full DNS picture in milliseconds — A, AAAA, MX, NS, TXT, CNAME, SOA, CAA — pulled live from authoritative servers, not stale cache.
Bookmark-worthy moments.
Four moments when this becomes the first tab you open. The kind of thing you keep one click away.
Debug a site that just went dark
Client calls saying their site is down? A 30-second lookup shows whether the issue is DNS, hosting, or somewhere else — before you start guessing.
Verify a migration is propagating
Moved nameservers or switched hosts? Watch the new records appear in real time and confirm every TLD is seeing the change.
Audit a competitor's stack
MX records reveal their email provider. NS records reveal their hosting. TXT records often leak the whole stack. One query, the full picture.
Troubleshoot email deliverability
SPF, DKIM, DMARC, MX — see every email-related record in one place. Fix bounces before they cost you a campaign.
What is DNS, anyway?
The 60-second primer plus the cheat sheet you wish you'd kept on a sticky note.
DNS — the Domain Name System — is the phone book of the internet. Every time you type a domain into your browser, dozens of lookups happen behind the scenes to translate that human-friendly name into the machine-readable IP addresses that actually route your packets to a server.
But DNS does more than turn names into IPs. Domains carry MX records for mail routing, NS records that delegate to nameservers, TXT records that hold verification tokens and security policies, CNAME aliases that point one domain at another. Reading these records is the difference between guessing why something's broken and knowing.
This tool queries authoritative nameservers directly — not a recursive cache — so what you see is the truth right now, not what some resolver remembered an hour ago. When DNS is the suspect, propagation matters and stale data lies.
Record types · quick reference
IPv4 address. The most common record — points a domain at an IPv4 server.
76.76.21.21IPv6 address. The IPv6 cousin of A.
2606:4700::1111Mail exchanger. Tells SMTP servers where to deliver email for this domain.
aspmx.l.google.comNameserver. Which servers are authoritative for this domain's records.
ns1.vercel-dns.comFree-form text. Holds SPF, DKIM, DMARC, and domain verification tokens.
v=spf1 include:_spf.google.com ~allCanonical name. Points one domain alias at another canonical name.
cname.vercel-dns.comStart of authority. Primary admin info for the zone — serial, refresh, retry.
ns1 hostmaster 2026062901Certification authority. Restricts which CAs can issue certs for this domain.
0 issue "letsencrypt.org"Asked. Answered.
Tool questions, topic questions — answered without the hedging. Anything missing? Email hi@seonova.io and we'll fold it in.
No per-user limit. Run a lookup ten times in a row if you need to. The only block is obvious automation — request-per-second scripting will trip a temporary IP throttle so the tool stays fast for everyone else.
More to bookmark.
Tools that share the same engine — and tend to land in the same tab group.
This, but automated.
SEONova Pro runs this exact lookup across your entire domain portfolio — every day, automatically, with Slack alerts the moment a record changes. The free tool is fast. The platform never sleeps.