blå.dk is a .dk domain served by 4 nameservers (dns01.dipcon.com, dns02.ports.se, dns03.ports.se and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 5.255.156.145 | 3600s | — | — | — | — | 🇳🇱 The Netherlands | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | xn--bl-zia.dk → 5.255.156.145 |
| 🔶 Autoconfig | xn--bl-zia.dk → 5.255.156.145 |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (blå.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.blå.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:ebay-classifieds@rua.agari.com,mailto:dmarc-722-08-92xze@emvdmarc.com; ruf=mailto:ebay-classifieds@ruf.agari.com; rf=afrf; fo=1; pct=100; ri=3600; adkim=s; aspf=s |
| www CNAME | xn--bl-zia.dk (all on xn--bl-zia.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.blå.dk | xn--bl-zia.dk |
| 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 | 2021100400 |
| Primary NS (MNAME) | dns01.dipcon.com |
| Responsible (RNAME) | registry@ports.net |
| Refresh | 1800s |
| Retry | 900s |
| Expire | 1814400s |
| Minimum (neg-cache TTL) | 3600s |