att.dk is a .dk domain served by 4 nameservers (ns10a.attdns.net, ns10b.attdns.net, ns10c.attdns.net 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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns10a.attdns.net | — | — | — |
| ns10b.attdns.net | — | — | — |
| ns10c.attdns.net | — | — | — |
| ns10d.attdns.net | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 144.160.155.43 | — | att.com att.net |
AS797 | — | — | — | — |
| 144.160.36.42 | — | att.com att.net my.atttest.com |
AS797 | — | — | — | — |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (att.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.att.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com |
| www CNAME | att.com (all on att.com) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 0/10 · policy: -all
No problems found| 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 | 2011120601 |
| Primary NS (MNAME) | ns0.attdns.net |
| Responsible (RNAME) | eiss-dns@att.com |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 2592000s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-06-20 07:00:44 | 4542ms | 4 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 13:57:07 shown | 3861ms | 4 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 13:48:39 | 1264ms | 4 NS 2 A 0 MX | 🔓 Insecure |