tanknet.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 5 February 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.248.138.89 is hosted by Netnoerden ApS (AS216275) in Denmark. Mail is handled by host.tanknet.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 |
|---|---|---|---|---|---|---|---|
| 80.248.138.89 | 3600s | host.tanknet.dk | AS216275 | Netnoerden ApS | 80.248.138.0/23 | 🇩🇰 Denmark | Søborg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | host.tanknet.dk | 80.248.138.89 | host.tanknet.dk | AS216275 Netnoerden ApS |
| TXT Record |
|---|
| v=spf1 ip4:80.248.138.89 include:_spf.google.com ~all |
| Policy | Record (tanknet.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:80.248.138.89 include:_spf.google.com ~all |
| Policy | Record (_dmarc.tanknet.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc@tanknet.dk; ruf=mailto:dmarc-fail@tanknet.dk; fo=1 |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~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: 1/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.tanknet.dk | M8kAshgYEW5YxFnDPrLnLK8SDsS6bz5u6O7g0CBssQE |
| TXT | _acme-challenge.tanknet.dk | NF3ekiyOtPc3FC6YU3neGanyAmxFFVP_YogLffyPfA8 |
| TXT | _acme-challenge.tanknet.dk | VyLlkYowK7z6RfBmfSNCOTSGiG4_M2H1eFbZH0GeevI |
| TXT | _acme-challenge.tanknet.dk | iUFu2O0Zbef2RG3ltvY8ennxRqTECMqLxlbgbzpoebw |
| TXT | _acme-challenge.tanknet.dk | ppSfFkcb9jlLakhz3VnnW5rKdWMuaYhIHEOQvwUpDno |
| TXT | _acme-challenge.tanknet.dk | urt6DHjnIpapG4A0kFqN5k9i_IWl4loa58z0bOxb0XA |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092901 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2023-02-05 |
| Expires | 2027-02-04 (104d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 17:25:38 | 1183ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 01:24:21 | 705ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 01:09:18 shown | 701ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-19 02:31:46 | 908ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 21:54:16 | 2004ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 01:34:33 | 2475ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 19:10:32 | 2169ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 23:20:33 | 829ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-26 19:39:26 | 16811ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 04:15:11 | 660ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 05:03:37 | 1040ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 22:13:56 | 614ms | 3 NS 1 A 1 MX | 🔒 Secure |