sego.dk is a .dk domain served by 2 nameservers (joel.ns.cloudflare.com, jule.ns.cloudflare.com). It was registered on 1 February 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.56.21 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.56.21 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.175.251 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 172.67.175.251 |
| 🔶 Autoconfig | 104.21.56.21 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:affb | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:3815 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.56.21,172.67.175.251 ech=AEX+DQBBbQAgACC4bXkO/CM2lDhGvQrkr9fDR3Zk7pt8YuHlvWzdLiqDBAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:affb,2606:4700:3035::6815:3815 |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (sego.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.sego.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject |
| www | 104.21.56.21 172.67.175.251 2606:4700:3031::ac43:affb 2606:4700:3035::6815:3815 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.sego.dk | Uyb5_zSDAzrJ5wx8R6gbQluxajgANWmyuGLYZ60S2Og |
| TXT | _acme-challenge.sego.dk | Z6Y_pisQiXcj1NRTG1XeTatjB_8dbxONpNCB7GNG204 |
| 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 | 2413394225 |
| Primary NS (MNAME) | joel.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 2008-02-01 |
| Expires | 2027-02-28 (132d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 15:43:57 | 413ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-08 14:30:21 | 445ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-10-03 13:29:40 | 473ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-30 11:41:45 | 593ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-24 10:15:50 | 603ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-01 20:28:09 | 553ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-31 00:08:58 | 1718ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-28 11:29:21 shown | 1592ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-03 13:14:40 | 894ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-26 17:04:39 | 734ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-18 15:04:38 | 660ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-18 02:28:20 | 824ms | 4 NS 1 A 0 MX | 🔓 Insecure |