flexdanmark.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 21 March 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.221.143.80 is hosted by Nordjyllands Trafikselskab I/S (AS59700) in Denmark. Mail is handled by frontmta.hostedsepo.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 91.221.143.80 | 3600s | — | AS59700 | Nordjyllands Trafikselskab I/S | 91.221.142.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | frontmta.hostedsepo.dk | 92.43.124.44 | — | AS44398 Itm8 A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 0 | 443 | mail.flexdanmark.dk |
| _sipfederationtls._tcp | 10 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| f77wzslf96l6dnyqs5k9hrgk2wdkv0wq |
| google-site-verification=Tg2J_ujSt-lm5d2Alb80p--NmY5SYve3-ZEeQfGIp8s |
| MS=ms42642006 |
| openai-domain-verification=dv-hRBpynfT0TaFjZzdnytc4SvW |
| status-page-domain-verification=snp3w957wv90 |
| v=spf1 mx a include:o._spf.hostedsepo.dk ip4:91.221.142.0/23 include:stspg-customer.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all |
| Policy | Record (flexdanmark.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a include:o._spf.hostedsepo.dk ip4:91.221.142.0/23 include:stspg-customer.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.flexdanmark.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:incidents@flexdanmark.dk |
| www | 91.221.143.80 (AS59700) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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: 6/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.flexdanmark.dk | BpugEYuvtht9-9lnJkWD_tio5aIpt7FOovcUaqp3Ii4 |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.frontmta.hostedsepo.dk | DANE-TA · SPKI · SHA-256 | 1E20888F63520C235F8E61FDEA725CCE… |
| SMTP _25._tcp.frontmta.hostedsepo.dk | DANE-EE · SPKI · SHA-256 | F6EC319A6D18F16926CF1DC9D5AFACBE… |
| 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 | 2026100551 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2011-03-21 |
| Expires | 2027-05-31 (226d) |
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 |
|---|---|---|---|
| 2026-10-12 16:44:52 | 769ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-05 16:41:56 shown | 915ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 16:31:26 | 2395ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 16:10:19 | 808ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 00:25:07 | 795ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-18 01:31:49 | 1712ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-10 23:38:09 | 2442ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-06 06:38:08 | 1649ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-28 04:22:00 | 2624ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-21 07:04:07 | 17048ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-18 03:48:53 | 16926ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-07 20:49:28 | 24634ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-21 18:00:14 | 8780ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-07 03:14:08 | 2546ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 14:30:29 | 829ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 23:32:30 | 1517ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 03:48:57 | 915ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 05:23:04 | 2100ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 10:12:00 | 1943ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 10:07:19 | 1043ms | 4 NS 1 A 1 MX | 🔓 Insecure |