dfsa.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 23 February 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 172.233.147.252 is hosted by Akamai Connected Cloud (AS63949) in United States. Mail is handled by ftsmail1.ftnet.dk, ftsmail2.ftnet.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 172.233.147.252 | 1200s | — | AS63949 | Akamai Connected Cloud | 172.233.0.0/16 | 🇺🇸 United States | Los Angeles |
| 172.233.57.17 | 1200s | 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 | 43200s | ftsmail1.ftnet.dk | 130.185.136.199 | ftsmail1.ftnet.dk | AS31027 GlobalConnect A/S |
| 10 | 43200s | ftsmail2.ftnet.dk | 130.185.136.205 | ftsmail2.ftnet.dk | AS31027 GlobalConnect A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2600:3c09::f03c:94ff:fed1:f1bb | 1200s | — | AS63949 | Akamai Connected Cloud | 2600:3c08:0:0:0:0:0:0/30 | 🇸🇪 Sweden | Stockholm |
| 2600:3c0e::f03c:94ff:fed1:4ea | 1200s | — | AS63949 | Akamai Connected Cloud | 2600:3c0e:0:0:0:0:0:0/32 | 🇳🇱 The Netherlands | Amsterdam |
| TXT Record |
|---|
| _12azlemgsvixhga9pxub2pll44799xv |
| _3727jduxsd835s0d2yohm9stjbh5wep |
| 9d582dbsgvpw4r3jdxnmmw8gwc3s5g5n |
| apple-domain-verification=b4gxExHgtxoOqChW |
| c9tdhwcz62fbc5fg8m538q65qtkvdrdt |
| google-site-verification=NHlaDuX9k-Tbk8vCIUDPAofIsvYzdbsSQUzldGKezQc |
| j457jf977ncw9cnw3bhln8m04g7tysv5 |
| v=spf1 mx ip4:77.221.225.4 ip4:93.165.151.197 ip4:130.185.136.196 ip4:92.62.195.66 ~all |
| Policy | Record (dfsa.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx ip4:77.221.225.4 ip4:93.165.151.197 ip4:130.185.136.196 ip4:92.62.195.66 ~all |
| Policy | Record (_dmarc.dfsa.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dyxhvrg8@ag.dmarcian-eu.com; ruf=mailto:dyxhvrg8@fr.eu.dmarcian.com |
| www CNAME | www.dfsa.dk.edgekey.net (all on edgekey.net) |
| www vs bare domain | Different networks dfsa.dk: 172.233.147.252 172.233.57.17 2600:3c09::f03c:94ff:fed1:f1bb 2600:3c0e::f03c:94ff:fed1:4ea (AS63949) (all like this)www.dfsa.dk: 2.19.173.185 2.19.173.202 2a02:26f0:3b::5f64:9bc0 2a02:26f0:3b::5f64:9bc9 (AS20940) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~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: 1/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.dfsa.dk | 09nU_J9cVQ7q9pau8WuHhOEHPsOHZgi2hxcZ0ZX40c8 |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.ftsmail1.ftnet.dk | DANE-EE · SPKI · SHA-256 | A4A472465AE55C9AAE69A123DB87AAB1… |
| SMTP _25._tcp.ftsmail2.ftnet.dk | DANE-EE · SPKI · SHA-256 | A4A472465AE55C9AAE69A123DB87AAB1… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101401 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2000-02-23 |
| Expires | 2028-03-31 (530d) |
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 |
|---|---|---|---|
| 2026-10-14 20:40:24 shown | 1387ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-10-13 18:38:31 | 725ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-30 22:36:32 | 709ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-27 05:20:01 | 754ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-23 10:41:47 | 1858ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-19 20:39:17 | 699ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-17 02:35:47 | 2729ms | 2 NS 2 A 2 MX | 🔒 Secure |