321go.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 15 July 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.57.241.43 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mx1.spamfilter.cc, mx2.spamfilter.cc and 1 more. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 87.57.241.43 | 3600s | 87-57-241-43-static.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.57.0.0/16 | 🇩🇰 Denmark | Greve |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 87.57.241.43 |
| 🔶 Autoconfig | 87.57.241.43 |
| TXT Record |
|---|
| v=spf1 include:_include.mxhotel.dk -all |
| Policy | Record (321go.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_include.mxhotel.dk -all |
| www | 87.57.241.43 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: -all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101001 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2004-07-15 |
| Expires | 2027-07-31 (287d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 23:24:27 shown | 761ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-05 21:03:13 | 2287ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-25 18:50:18 | 890ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-23 09:53:32 | 1058ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-20 06:55:58 | 1318ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-16 12:42:42 | 852ms | 2 NS 1 A 3 MX | 🔒 Secure |