ntt.dk is a .dk domain served by 4 nameservers (ns1.dotserv.com, ns1.dotserv.net, ns2.dotserv.com and 1 more). It was registered on 5 November 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.216.109 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by ispc9.dotserv.com. 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 |
|---|---|---|---|---|---|---|---|
| 178.20.216.109 | 3600s | ispc9.dotserv.com | AS21060 | Atea A/S | 178.20.216.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | ispc9.dotserv.com | 178.20.216.109 | ispc9.dotserv.com | AS21060 Atea A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.ntt.dk → 178.20.216.109 |
| 🔶 Autoconfig | 178.20.216.109 |
| TXT Record |
|---|
| v=spf1 include:_spf.dotserv.com -all |
| Policy | Record (ntt.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.dotserv.com -all |
| Policy | Record (_dmarc.ntt.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; |
| www | 178.20.216.109 (AS21060) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 3/10 · 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 | 1350378603 |
| Primary NS (MNAME) | ns1.dotserv.com |
| Responsible (RNAME) | hostmaster@dotserv.com |
| Refresh | 14400s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 900s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1996-11-05 |
| Expires | 2026-12-31 (73d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Domain | Registrar |
|---|---|
| inklinometer.dk | FIONIA IT ApS |
| seika.dk | FIONIA IT ApS |
| sensocar.dk | FIONIA IT ApS |
| transducer.dk | FIONIA IT ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 15:22:16 shown | 556ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 07:12:42 | 615ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-19 07:42:11 | 59962ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 11:42:46 | 729ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 07:16:03 | 1224ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 03:48:03 | 783ms | 4 NS 1 A 1 MX | 🔓 Insecure |