flx.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx.flx.dk. The zone is DNSSEC-signed and validates, 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.flx.dk | 91.221.143.35 91.221.143.35 |
mx.flexdanmark.dk smtp.flexdanmark.dk |
AS59700 Nordjyllands Trafikselskab I/S AS59700 Nordjyllands Trafikselskab I/S |
| TXT Record |
|---|
| google-site-verification=gsxjA2gbSa7ApU_mXBEvXCjEAOduvC-RxGr4V_tsyAo |
| v=spf1 mx a include:_spf.simitu.dk ip4:91.221.142.0/23 include:sendgrid.net -all |
| vpe=9916d815 |
| Policy | Record (flx.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a include:_spf.simitu.dk ip4:91.221.142.0/23 include:sendgrid.net -all |
| Policy | Record (_dmarc.flx.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:incidents@flexdanmark.dk |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves flx.dk: no address www.flx.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 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: 5/10 · policy: -all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026093000 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 12:16:15 | 541ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-05 15:43:09 | 362ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-01 15:22:19 | 586ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 15:16:36 shown | 627ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-29 15:04:52 | 1229ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-21 07:38:22 | 534ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-21 06:15:12 | 1125ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-14 04:43:15 | 745ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-05 02:58:23 | 724ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-18 02:18:26 | 887ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-05 01:14:21 | 1035ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-21 04:37:37 | 979ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-17 12:56:09 | 1086ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-14 15:05:45 | 823ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-13 02:04:13 | 8707ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-06 20:55:11 | 1965ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-01 12:51:15 | 1473ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 14:04:04 | 721ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 00:06:25 | 1101ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 02:36:42 | 1327ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 10:09:28 | 524ms | 4 NS 0 A 1 MX | 🔒 Secure |