kurs21nord.dk is a .dk domain served by 3 nameservers (mimer.deic.dk, ns-soa.darenet.dk, orion.i2.dk). It was registered on 6 May 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 174.129.25.170 is hosted by Amazon.com, Inc. (AS14618) in United States. Mail is handled by .. 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 |
|---|---|---|---|---|---|---|---|
| 174.129.25.170 | 300s | wwwizer.com | AS14618 | Amazon.com, Inc. | 174.129.0.0/16 | 🇺🇸 United States | Ashburn |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 86400s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | ghs.googlehosted.com → 216.58.201.243 |
| 🔶 Autoconfig | ghs.googlehosted.com → 216.58.201.243 |
| TXT Record |
|---|
| google-site-verification=-nNNsvLDDnIBWZ1b6eTP3Itovd_LFAF4GPdvpFUBHkI |
| inst=University College Lilleb |
| v=spf1 -all |
| Policy | Record (kurs21nord.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.kurs21nord.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; |
| www CNAME | ghs.googlehosted.com (all on googlehosted.com) |
| www vs bare domain | Different networks kurs21nord.dk: 174.129.25.170 (AS14618) (all like this)www.kurs21nord.dk: 216.58.201.243 2a00:1450:400f:810::2013 (AS15169) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.kurs21nord.dk | ghs.googlehosted.com |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 1792366045 |
| Primary NS (MNAME) | mimer.deic.dk |
| Responsible (RNAME) | dns@support.i2.dk |
| Refresh | 16384s |
| Retry | 2048s |
| Expire | 2097152s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-05-06 |
| Expires | 2027-05-31 (224d) |
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 |
|---|---|---|---|
| 2026-10-19 02:21:15 shown | 589ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-18 02:09:51 | 1283ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-17 01:01:07 | 622ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-16 00:57:12 | 509ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 00:21:31 | 488ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 23:59:45 | 1335ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-11 13:53:01 | 583ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 12:18:23 | 2982ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 11:59:37 | 1506ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 11:40:53 | 1821ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 07:16:40 | 825ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 07:04:42 | 470ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 07:03:26 | 712ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 06:59:45 | 2039ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 06:52:28 | 732ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 16:07:49 | 463ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 00:12:17 | 1914ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 23:40:58 | 3328ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 23:31:15 | 2609ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 23:11:15 | 2003ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 22:56:52 | 6844ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 22:36:28 | 1861ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 20:15:41 | 1408ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-09 19:04:59 | 6293ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-09 10:21:19 | 812ms | 3 NS 1 A 1 MX | 🔒 Secure |