contrib.dk is a .dk domain served by 2 nameservers (deb.ns.cloudflare.com, salvador.ns.cloudflare.com). It was registered on 13 July 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 172.67.144.135 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by contrib-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 172.67.144.135 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| 104.21.55.46 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3035::ac43:9087 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000::/42 | — | — |
| 2606:4700:3031::6815:372e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000::/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.55.46,172.67.144.135 ech=AEX+DQBBZgAgACB/aSfXsGwLplYVTxaBBWKJ3ERO83HmmnYmrIs722VxCAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:372e,2606:4700:3035::ac43:9087 |
| TXT Record |
|---|
| MS=5650A8652C787449AF142F349ADB0D0113A4E23A |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (contrib.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.contrib.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc@contrib.dk |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com; cansignhttpexchanges=yes |
| 0 | issue | letsencrypt.org |
| 0 | issue | pki.goog; cansignhttpexchanges=yes |
| 0 | issue | sectigo.com |
| 0 | issue | ssl.com |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com; cansignhttpexchanges=yes |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | pki.goog; cansignhttpexchanges=yes |
| 0 | issuewild | ssl.com |
| www | 104.21.55.46 172.67.144.135 2606:4700:3031::6815:372e 2606:4700:3035::ac43:9087 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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-contrib-dk._domainkey.contribdk.onmicrosoft.com | 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: 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 |
| Key type | Algorithm | Public key |
|---|---|---|
| KSK | ECDSA P-256/SHA-256 | mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopK… |
| ZSK | ECDSA P-256/SHA-256 | oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XN… |
| Field | Value |
|---|---|
| Serial | 2411002275 |
| Primary NS (MNAME) | deb.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2011-07-13 |
| Expires | 2027-07-31 (285d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 06:36:04 | 3374ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 19:43:48 | 1825ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-22 00:33:13 | 1634ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-14 22:06:26 | 1867ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-11 15:27:32 | 954ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 13:19:10 | 2458ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 11:25:54 | 1829ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-16 13:50:53 shown | 7353ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-02 14:12:09 | 4574ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-17 15:24:56 | 1403ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-09 05:32:11 | 3827ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 09:56:28 | 2407ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 22:10:06 | 1150ms | 2 NS 2 A 1 MX | 🔓 Insecure |