cecnet.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 23 August 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.226.145.84 is hosted by Netnoerden ApS (AS216275) in Denmark. Mail is handled by cecnet.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 91.226.145.84 | 600s | — | AS216275 | Netnoerden ApS | 91.226.144.0/23 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | cecnet.dk | 91.226.145.84 | — | AS216275 Netnoerden ApS |
| TXT Record |
|---|
| google-site-verification=-LuEBt2Yq4GB7QBtVbHuZRAf8pSi4sYVO-ewfD4pzDA |
| www | 91.226.145.84 (AS216275) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100501 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2007-08-23 |
| Expires | 2027-08-31 (311d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 12:40:41 shown | 4429ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 10:52:40 | 2531ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 08:16:06 | 2571ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 02:27:01 | 2712ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 01:44:17 | 4425ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 00:31:11 | 563ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-18 10:27:15 | 1147ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 16:30:42 | 1349ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-22 13:47:15 | 4689ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-06 19:05:48 | 8630ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 01:30:43 | 859ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 11:54:08 | 1171ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 10:14:50 | 1791ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 21:33:17 | 49455ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 20:10:01 | 1341ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 20:00:53 | 415ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 20:00:09 | 443ms | 2 NS 1 A 1 MX | 🔒 Secure |