terrabit.dk is a .dk domain served by 2 nameservers (irma.ns.cloudflare.com, noel.ns.cloudflare.com). It was registered on 14 December 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.84.149 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by terrabit-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.84.149 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.194.45 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | — | terrabit-dk.mail.protection.outlook.com | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3035::6815:5495 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:c22d | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.84.149,172.67.194.45 ech=AEX+DQBBEQAgACDI4xqwwmAc0aVdhaScxMRTfCZo1/vM6WMg5h+quY5QUgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:5495,2606:4700:3036::ac43:c22d |
| TXT Record |
|---|
| MS=ms26565416 |
| MS=ms50029033 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (terrabit.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 45.95.53.145 (AS200303) (address records, no CNAME) |
| www vs bare domain | Different networks terrabit.dk: 104.21.84.149 172.67.194.45 2606:4700:3035::ac43:c22d 2606:4700:3037::6815:5495 (AS13335) (all like this)www.terrabit.dk: 45.95.53.145 (AS200303) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-terrabit-dk._domainkey.friedrichholding.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-terrabit-dk._domainkey.friedrichholding.onmicrosoft.com | 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| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2406329504 |
| Primary NS (MNAME) | irma.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | INWX GmbH |
| Registered | 2021-12-14 |
| Expires | 2026-12-13 (55d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 21:38:18 | 2980ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 21:11:58 | 1940ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 20:06:57 | 701ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 20:12:10 | 1464ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-12 18:40:25 | 1406ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-18 22:41:52 | 4425ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-02 19:46:36 | 994ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-26 09:28:52 | 2584ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-20 03:22:17 | 10204ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-03 13:49:57 | 2388ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 21:46:39 | 1356ms | 2 NS 2 A 1 MX | ❓ Unknown |
| 2026-06-17 12:14:12 shown | 2711ms | 2 NS 2 A 1 MX | 🔓 Insecure |