3z81.dk is a .dk domain served by 2 nameservers (amit.ns.cloudflare.com, naya.ns.cloudflare.com). It was registered on 21 December 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.87.209 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by 3z81-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.87.209 | 600s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.146.113 | 600s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.179.72 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::ac43:9271 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:57d1 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=188.114.96.1,188.114.97.1 ech=AEX+DQBBSAAgACCQX9eM2xaCzXoSwa+W7UzbxWErZ7Nk9GpT0fJAz3meAgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::1,2a06:98c1:3121::1 |
| TXT Record |
|---|
| MS=ms37686915 |
| MS=ms53759921 |
| MS=ms57346720 |
| MS=ms74589941 |
| v=spf1 a mx include:spf.protection.outlook.com ~all |
| Policy | Record (3z81.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx include:spf.protection.outlook.com ~all |
| www | 104.21.87.209 172.67.146.113 2606:4700:3036::ac43:9271 2606:4700:3037::6815:57d1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 3/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2406611944 |
| Primary NS (MNAME) | amit.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2015-12-21 |
| Expires | 2033-05-31 (2418d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Domain | Registrar |
|---|---|
| cibmal.dk | Punktum dk A/S (direct) |
| eskerahn.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 17:28:08 | 3450ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 15:44:09 | 1086ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-25 15:32:54 | 2188ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-11 06:38:15 | 7462ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-27 16:49:08 | 2428ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-27 22:56:16 | 1512ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 23:05:13 shown | 1885ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 12:47:10 | 930ms | 2 NS 2 A 1 MX | 🔓 Insecure |