helsbib.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 18 August 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 130.226.25.93 is hosted by IDDQD-AS (AS1835) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 130.226.25.93 | 3600s | — | AS1835 | IDDQD-AS | 130.226.0.0/16 | 🇩🇰 Denmark | — |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 0 | 5061 | access01.helsingor.dk |
| TXT Record |
|---|
| 33xjsr7sd6dhdfk2nr3spth4d8qgvmh8 |
| MS=ms14566650 |
| v=spf1 include:spf.ubivox.com include:_spf.centerasecurity.dk include:spf.mandrillapp.com include:_spf.dbc.dk include:spf.protection.outlook.com include:spf.mailanyone.net ip4:185.81.116.10 -all |
| Policy | Record (helsbib.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.ubivox.com include:_spf.centerasecurity.dk include:spf.mandrillapp.com include:_spf.dbc.dk include:spf.protection.outlook.com include:spf.mailanyone.net ip4:185.81.116.10 -all |
| Policy | Record (_dmarc.helsbib.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;pct=100;rua=mailto:641c25789e6bd@dmarc.centerasecurity.com;ruf=mailto:dmark_forensic_reports@helsingor.dk; |
| www CNAME | helsbib.dk (all on helsbib.dk) → 130.226.25.93 (AS1835) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u10992112.wl113.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u10992112.wl113.sendgrid.net | RSA · ~1024 bit below 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: 6/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101001 |
| 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 | 1998-08-18 |
| Expires | 2027-09-30 (346d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-11 05:49:33 shown | 1700ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-08 03:39:59 | 521ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-05 20:48:44 | 557ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-30 20:06:10 | 632ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-29 17:12:05 | 770ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-29 14:02:28 | 1788ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-27 13:53:59 | 735ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-25 05:14:07 | 2796ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-24 09:10:13 | 5406ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-21 02:22:42 | 5263ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-07 00:52:09 | 9025ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-26 13:30:10 | 5399ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-02 22:10:24 | 2870ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-22 06:12:43 | 990ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-21 17:54:52 | 10660ms | 0 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-06-21 10:52:46 | 1442ms | 0 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-06-17 11:22:00 | 929ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 11:21:26 | 1098ms | 2 NS 1 A 3 MX | 🔒 Secure |