holmnet.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 May 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.13.164.36 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by mail.holmnet.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 |
|---|---|---|---|---|---|---|---|
| 20.13.164.36 | 3200s | garfield.holmnet.dk | AS8075 | Microsoft Corporation | 20.0.0.0/11 | 🇮🇪 Ireland | Dublin |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 21600s | mail.holmnet.dk | 20.13.164.36 | garfield.holmnet.dk | AS8075 Microsoft Corporation |
| TXT Record |
|---|
| google-site-verification=jf1gMeAVKQWcszU1JwZjPLVEZcb4N2HhkvzECghBwYE |
| v=spf1 mx a ip4:9.205.16.211 ip4:20.13.164.36 ip4:87.61.93.103 ~all |
| Policy | Record (holmnet.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx a ip4:9.205.16.211 ip4:20.13.164.36 ip4:87.61.93.103 ~all |
| Policy | Record (_dmarc.holmnet.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; adkim=r; aspf=r; sp=none |
| www CNAME | odie.holmnet.dk (all on holmnet.dk) → 9.205.16.211 (AS8075) |
| www vs bare domain | Different networks (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: 2/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061001 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2008-05-20 |
| Expires | 2027-05-31 (217d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 20:57:23 | 1162ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 06:38:15 | 842ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 06:32:32 | 662ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 04:59:22 | 504ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 23:08:44 | 752ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 10:51:11 | 1649ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 14:24:29 | 608ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-09 18:11:12 | 2382ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-08 05:49:49 | 736ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-11 07:27:49 | 665ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 16:58:02 | 700ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 19:02:27 | 2649ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 01:46:12 shown | 2533ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 14:40:24 | 686ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 13:23:43 | 1760ms | 2 NS 1 A 1 MX | 🔒 Secure |