frederiksbro.dk is a .dk domain served by 2 nameservers (brenna.ns.cloudflare.com, leonard.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.36.240 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 2 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.36.240 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.201.51 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:24f0 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:c933 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.36.240,172.67.201.51 ech=AEX+DQBBOAAgACANrDDKHh+GnCB55piWVLxJJ7cLlCFhn/TZ0vU3ITNWEwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:24f0,2606:4700:3037::ac43:c933 |
| TXT Record |
|---|
| apple-domain-verification=3YpSL8xF2Frts4dR |
| apple-domain-verification=iWc7TgaPkEbsEE86 |
| google-site-verification=747NOsZN6BSxnFNkiH9t9RV80kJ47aJvnqiiAOuXTNw |
| MS=ms76873503 |
| Sendinblue-code:144f0234a66a2d8d99aff38e1c683e04 |
| v=spf1 a mx ip4:172.104.253.171 include:relay.mailchannels.net include:_spf.google.com include:spf.protection.outlook.com include:spf.sendinblue.com ~all |
| Policy | Record (frederiksbro.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx ip4:172.104.253.171 include:relay.mailchannels.net include:_spf.google.com include:spf.protection.outlook.com include:spf.sendinblue.com ~all |
| Policy | Record (_dmarc.frederiksbro.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400 |
| www | 185.237.124.57 (AS210939) (address records, no CNAME) |
| www vs bare domain | Different networks frederiksbro.dk: 104.21.36.240 172.67.201.51 2606:4700:3033::6815:24f0 2606:4700:3037::ac43:c933 (AS13335) (all like this)www.frederiksbro.dk: 185.237.124.57 (AS210939) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: 6/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| 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 | 2407952694 |
| Primary NS (MNAME) | brenna.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:46:59 | 810ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-09-20 04:07:53 | 949ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-09-17 23:47:23 | 2786ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-09-03 20:03:40 | 3729ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-08-25 11:57:35 | 1809ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-07-20 12:48:24 | 1826ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-06-29 10:18:11 shown | 1436ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-06-26 13:40:31 | 1595ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-06-20 01:46:30 | 1129ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-06-17 10:35:57 | 1354ms | 2 NS 2 A 4 MX | 🔓 Insecure |
| 2026-06-17 10:31:13 | 1027ms | 2 NS 2 A 4 MX | 🔓 Insecure |