cbs.dk is a .dk domain served by 5 nameservers (ns-soa.darenet.dk, ns-soa1.darenet.dk, ns-soa2.darenet.dk and 2 more). It was registered on 23 March 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 130.226.47.57 is hosted by IDDQD-AS (AS1835) in Denmark. Mail is handled by cbs-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 130.226.47.57 | 600s | — | AS1835 | IDDQD-AS | 130.226.0.0/16 | 🇩🇰 Denmark | Odense |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | autodiscover.outlook.com |
| TXT Record |
|---|
| _globalsign-domain-verification=tbIFWv-Urg6rp9iLAJgaD1BdVroHLA4g89hGdHuuS5 |
| adobe-idp-site-verification=4490ed9920815a2f2ba37560a6b4a63a6f476f970728818701172fe3a64491ec |
| anthropic-domain-verification-5kdvz2=10RwGLFhHknkCnJxk0jaSocap |
| cZe1Skrwho9iK8UkxIWxzI/VAldkEPXmoco1+s9OPDwx+bjWwSCxmNxpTHiv3rApot8mb986YJnKDUWgAVpWoQ== |
| facebook-domain-verification=hcqh19jey0ngii77oxy1ujw7jiol9s |
| google-site-verification=HBEcBL6R2b7YvbYP7rQoehRSAXgbAwS7yELfcp1XCAA |
| HARICA-PCIJgvbUIBwLWuVqm9Q |
| MS=ms37854974 |
| openai-domain-verification=dv-gQGS2UJYOBO78PTGUxLRt4rL |
| proxy-ssl.webflow.com |
| successfactors-site-verification=MzljMjMzZTU5MmQyMmRkM2Q2ZTlhMTAyMmZkYjVjM2E0ZDNhZWIwNTk1NWMyMTQ0NjE1ZmZiMTA1OWU1ZjA5Nw== |
| v=spf1 include:_cbs_dk.spf-protect.com -all |
| ZOOM_verify_i9_ou8rjRIqtQlkqRGc4bQ |
| Policy | Record (cbs.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_cbs_dk.spf-protect.com -all |
| Policy | Record (_dmarc.cbs.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; pct=100; adkim=s; aspf=s; fo=1; ri=86400; rua=mailto:69fd8ea3510c1@dmarc-dk.centerasecurity.com |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com |
| 0 | issue | harica.gr |
| 0 | issue | letsencrypt.org |
| 0 | issue | sectigo.com |
| 0 | issue | trust-provider.com |
| 0 | issue | usertrust.com |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com |
| 0 | issuewild | harica.gr |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | sectigo.com |
| 0 | issuewild | trust-provider.com |
| 0 | issuewild | usertrust.com |
| www | 130.226.47.57 (AS1835) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 · ~1024 bit below 2048 bit |
| k1 | dkim.mcsv.net | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-cbs-dk._domainkey.studentcbs.onmicrosoft.com | 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: 7/10 · 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 | 2026101117 |
| Primary NS (MNAME) | ns1.cbs.dk |
| Responsible (RNAME) | DNS@cbs.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1998-03-23 |
| Expires | 2027-03-31 (165d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 17:09:58 | 1385ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 16:25:34 | 2594ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 15:03:24 shown | 4898ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 13:36:14 | 2062ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 10:50:32 | 4385ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-11 08:52:01 | 3421ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 08:31:49 | 1869ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 04:52:12 | 1547ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 04:46:05 | 3564ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 14:50:12 | 2603ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 14:43:05 | 2716ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 14:22:53 | 1557ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 14:19:38 | 1667ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 14:16:10 | 3898ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 14:14:04 | 2767ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 14:11:56 | 1712ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 14:06:20 | 1738ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 04:46:55 | 4593ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 04:39:08 | 7424ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 04:16:52 | 3060ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 04:10:58 | 3694ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 20:48:49 | 5517ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 20:19:33 | 5591ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 20:09:26 | 5018ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 19:58:27 | 4573ms | 5 NS 1 A 1 MX | 🔒 Secure |