tonsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 January 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.62.103.3 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by tonsen.dk. The zone is DNSSEC-signed and validates, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.62.103.3 | — | 0x573e6703.static.cust.fastspeed.dk | AS3292 | TDC Holding A/S | 87.62.0.0/15 | 🇩🇰 Denmark | Fredericia |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | tonsen.dk | 87.62.103.3 | 0x573e6703.static.cust.fastspeed.dk | AS3292 TDC Holding A/S |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com ~all |
| v=spf1 ip4:87.62.103.3 include:_spf.google.com ~all |
| Policy | Record (tonsen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| ~all (soft fail) | v=spf1 ip4:87.62.103.3 include:_spf.google.com ~all |
| Policy | Record (_dmarc.tonsen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; |
| www | 87.62.103.3 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
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 | 2026050503 |
| 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 | 2001-01-16 |
| Expires | 2027-03-31 (158d) |
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 |
|---|---|
| dng.dk | ONE.COM A/S |
| draegert.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 23:11:21 | 1087ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-23 10:53:36 | 1200ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-18 01:54:01 | 1145ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-06 16:36:14 | 893ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-06 23:17:36 | 814ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-08 15:41:49 | 1134ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 12:08:31 | 3946ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 12:17:18 shown | 904ms | 2 NS 1 A 1 MX | 🔒 Secure |