sum.dk is a .dk domain served by 2 nameservers (ns6.sitnet.dk, ns7.sitnet.dk). It was registered on 17 November 1994 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 172.232.147.252 is hosted by Akamai Connected Cloud (AS63949) in Sweden. Mail is handled by mx01.statens-it.dk, mx02.statens-it.dk and 6 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns6.sitnet.dk | 107.162.234.197 2604:e180:1071::3:1 |
— — |
AS55002 F5, Inc. AS55002 F5, Inc. |
| ns7.sitnet.dk | 107.162.176.221 2604:e180:1071::ffff:6ba2:b0dd |
— — |
AS55002 F5, Inc. AS55002 F5, Inc. |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 172.232.147.252 | 3600s | 172-232-147-252.ip.linodeusercontent.com | AS63949 | Akamai Connected Cloud | 172.232.128.0/17 | 🇸🇪 Sweden | Stockholm |
| 172.233.57.17 | 3600s | 172-233-57-17.ip.linodeusercontent.com | AS63949 | Akamai Connected Cloud | 172.233.0.0/16 | 🇳🇱 The Netherlands | Amsterdam |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mx01.statens-it.dk | 194.182.109.217 | mx01.statens-it.dk | AS58282 Statens IT |
| 10 | 600s | mx02.statens-it.dk | 194.182.109.218 | mx02.statens-it.dk | AS58282 Statens IT |
| 10 | 600s | mx03.statens-it.dk | 194.182.109.219 | mx03.statens-it.dk | AS58282 Statens IT |
| 10 | 600s | mx04.statens-it.dk | 194.182.109.220 | mx04.statens-it.dk | AS58282 Statens IT |
| 10 | 600s | mx05.statens-it.dk | 194.182.109.221 | mx05.statens-it.dk | AS58282 Statens IT |
| 10 | 600s | mx06.statens-it.dk | 194.182.109.222 | mx06.statens-it.dk | AS58282 Statens IT |
| 10 | 600s | mx07.statens-it.dk | 194.182.109.223 | mx07.statens-it.dk | AS58282 Statens IT |
| 10 | 600s | mx08.statens-it.dk | 194.182.109.224 | mx08.statens-it.dk | AS58282 Statens IT |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2600:3c09::f03c:94ff:fed1:f1bb | 3600s | — | AS63949 | Akamai Connected Cloud | 2600:3c08:0:0:0:0:0:0/30 | 🇸🇪 Sweden | Stockholm |
| 2600:3c0e::f03c:94ff:fed1:4ea | 3600s | — | AS63949 | Akamai Connected Cloud | 2600:3c0e:0:0:0:0:0:0/32 | 🇳🇱 The Netherlands | Amsterdam |
| 2a01:4f8:272:3c81::2 | 3600s | — | AS24940 | Hetzner Online GmbH | 2a01:4f8:0:0:0:0:0:0/31 | 🇩🇪 Germany | Falkenstein |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | mail.statens-it.dk |
| TXT Record |
|---|
| 8yJVIvGbBcLBH9q9zyz9JPU/pF6fl71nUy2PvzdPanxBSWwWnO1/D9UJZ3p9qEZvOZP/qf+jhCQ9DJm1Rg+5jQ== |
| kFwmm4gNwys7maMLbEyaDOtXPMV7BcQ0USk4rwGSu/U716WIbhxq0pScYPCQRAZtkOxIyS1Bn7zTjGk7heCtRQ== |
| v=spf1 ip4:194.182.109.192/26 ip4:188.64.157.0/28 ip4:193.3.234.62 ip4:13.69.14.193 ip4:193.3.234.5 ip4:193.3.234.141 ip4:188.64.157.0/28 include:umint.sitnet.dk include:spf.protection.outlook.com -all |
| WN+hB+I07iC0dU9s3tdTPwEOQx+85AF62ee55xm/eY8YmyM8t14yuXV1i0No5HL9laYcaB+QmyStPkw2raINuw== |
| Policy | Record (sum.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:194.182.109.192/26 ip4:188.64.157.0/28 ip4:193.3.234.62 ip4:13.69.14.193 ip4:193.3.234.5 ip4:193.3.234.141 ip4:188.64.157.0/28 include:umint.sitnet.dk include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.sum.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;fo=0;rua=mailto:tcod1eh2@ag.eu.dmarcadvisor.com;ruf=mailto:dmarcreports@dksund.dk |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:tcod1eh2@tls.eu.dmarcadvisor.com |
| www CNAME | www.skim.dk.edgekey.net (all on edgekey.net) |
| www vs bare domain | Different networks sum.dk: 172.232.147.252 172.233.57.17 2600:3c09::f03c:94ff:fed1:f1bb 2600:3c0e::f03c:94ff:fed1:4ea (AS24940 AS63949) (all like this)www.sum.dk: 95.100.155.193 95.100.155.218 2a02:26f0:3b::5f64:9bc1 2a02:26f0:3b::5f64:9bda (AS20940) |
| Wildcard | No |
| Denial of existence | NSEC3 · 10 iterations · 14-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | Revoked (empty key) |
| dkim | — | Revoked (empty key) |
| k1 | — | Revoked (empty key) |
| — | Revoked (empty key) | |
| s1 | — | Revoked (empty key) |
| s2 | — | Revoked (empty key) |
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: 2/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.sum.dk | 9CY4jJYyvF4gXIovpXcr8h6x0Gt3H9NTxLpY5fM0hts |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx01.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx01.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| SMTP _25._tcp.mx02.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| SMTP _25._tcp.mx02.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx03.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx03.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| SMTP _25._tcp.mx04.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx04.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| SMTP _25._tcp.mx05.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx05.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| SMTP _25._tcp.mx06.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| SMTP _25._tcp.mx06.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx07.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| SMTP _25._tcp.mx07.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx08.statens-it.dk | DANE-EE · Full cert · SHA-512 | 8A12C2B7C0B5B6A9B6026C875909858F… |
| SMTP _25._tcp.mx08.statens-it.dk | DANE-EE · Full cert · SHA-512 | 1DFC9477DAE259CF5EC3C684DAAEEA6C… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 16234 |
| Primary NS (MNAME) | ns6.sitnet.dk |
| Responsible (RNAME) | hostmaster@statens-it.dk |
| Refresh | 10800s |
| Retry | 1080s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1994-11-17 |
| Expires | 2030-12-31 (1536d) |
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 |
|---|---|---|---|
| 2026-10-16 13:37:43 shown | 1752ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-15 10:24:58 | 1602ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-14 09:55:18 | 18040ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-13 08:17:09 | 4685ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-12 05:19:50 | 18641ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-11 04:19:05 | 3680ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-10 03:58:57 | 5666ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-09 03:26:58 | 25025ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-08 03:22:25 | 2463ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-07 03:19:01 | 4593ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-05 20:45:59 | 2382ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-04 20:34:01 | 18697ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-03 20:24:30 | 1463ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-02 20:23:33 | 18628ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-10-01 20:21:27 | 3468ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-30 20:05:26 | 3688ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-29 19:53:09 | 5798ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-28 19:56:07 | 18086ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-27 19:47:17 | 18735ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-26 19:41:42 | 10395ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-25 19:30:55 | 2394ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-24 19:17:11 | 2379ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-23 18:48:48 | 18311ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-21 17:35:18 | 19608ms | 2 NS 2 A 8 MX | 🔒 Secure |
| 2026-09-17 10:00:53 | 18823ms | 2 NS 2 A 8 MX | 🔒 Secure |