certif.dk is a .dk domain served by 4 nameservers (ns.web-solutions.dk, ns2.web-solutions.dk, ns3.web-solutions.eu and 1 more). It was registered on 21 August 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.7.177.102 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by .. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 81.7.177.102 | 600s | — | AS47292 | Sentia Denmark A/S | 81.7.176.0/20 | 🇩🇰 Denmark | Nordhavn |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (certif.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.certif.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; |
| www CNAME | certif.dk (all on certif.dk) → 194.99.46.243 (AS34766) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2022054978 |
| Primary NS (MNAME) | ns.web-solutions.dk |
| Responsible (RNAME) | hostmaster@web-solutions.eu |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 21600s |
| Field | Value |
|---|---|
| Registrar | WEB SOLUTIONS A/S |
| Registered | 2009-08-21 |
| Expires | 2027-08-31 (318d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 21:21:02 | 658ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-09 13:35:58 | 797ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 12:19:35 | 762ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 09:12:30 | 838ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 08:58:10 | 1236ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-28 00:35:29 | 9402ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 13:04:12 | 1890ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-18 02:13:41 | 2078ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-11 01:42:33 | 978ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 22:26:28 | 2659ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-28 03:43:34 | 555ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-21 11:39:19 | 4674ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 11:09:43 | 3516ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 11:06:08 shown | 4696ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-14 03:07:41 | 751ms | 4 NS 1 A 1 MX | ❓ Unknown |
| 2026-08-06 12:59:45 | 953ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-04 04:46:39 | 1051ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-24 00:57:20 | 691ms | 4 NS 1 A 0 MX | ❓ Unknown |
| 2026-07-16 21:26:34 | 9551ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-11 20:15:54 | 9561ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-03 13:59:05 | 8815ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-27 09:06:07 | 1757ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-21 09:53:47 | 1573ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-16 20:10:12 | 437ms | 4 NS 1 A 0 MX | 🔓 Insecure |