blivhd.dk is a .dk domain served by 3 nameservers (ns1.sdu.dk, ns2.sdu.dk, ns3.sdu.dk). It was registered on 27 May 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 130.225.156.23 is hosted by IDDQD-AS (AS1835) in Denmark. 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 |
|---|---|---|---|---|---|---|---|
| 130.225.156.23 | 3600s | — | AS1835 | IDDQD-AS | 130.225.0.0/16 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| inst=CVUHandelsh\195\184jskolecentretSlagelse |
| uvmid=333410 |
| v=spf1 -all |
| Policy | Record (blivhd.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.blivhd.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:655b353a1f136@dmarc.centerasecurity.com; ruf=mailto:dmarc.reports@sdu.dk |
| www | 130.225.156.23 (AS1835) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 10 iterations · 13-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · 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 | 2011044892 |
| Primary NS (MNAME) | ns1.sdu.dk |
| Responsible (RNAME) | dns@it-service.sdu.dk |
| Refresh | 3600s |
| Retry | 360s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | dns.services ApS |
| Registered | 2005-05-27 |
| Expires | 2027-05-31 (226d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 05:10:46 | 4276ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-08 23:47:17 | 17741ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-05 22:09:59 | 16434ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-04 22:06:26 | 17315ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-30 21:31:56 | 19673ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-28 21:09:51 | 16461ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-26 20:58:28 | 16489ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 16:55:41 | 16443ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-21 21:21:15 | 6926ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-14 19:50:19 | 19063ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-12 03:11:10 | 16644ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-07 15:58:57 shown | 16389ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-04 15:16:56 | 16386ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-31 11:40:12 | 16403ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-26 09:57:53 | 4337ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-24 17:03:54 | 11105ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-18 01:28:20 | 8749ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-17 00:00:34 | 8647ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-10 21:24:54 | 4526ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-09 14:45:27 | 3557ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-03 03:42:51 | 10696ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-27 07:15:59 | 24486ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-25 05:47:13 | 8821ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-24 04:50:28 | 9520ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-21 12:23:33 | 4407ms | 3 NS 1 A 0 MX | 🔒 Secure |