c18r.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 March 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.213.67.90 is hosted by Telenor A/S (AS9158) in Denmark. Mail is handled by mail.c18r.dk. 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 |
|---|---|---|---|---|---|---|---|
| 77.213.67.90 | 3600s | — | AS9158 | Telenor A/S | 77.212.0.0/14 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.c18r.dk | 77.213.67.90 | — | AS9158 Telenor A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 77.213.67.90 |
| 🔶 Autoconfig | 77.213.67.90 |
| TXT Record |
|---|
| v=spf1 ip4:77.213.67.90 -all |
| Policy | Record (c18r.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:77.213.67.90 -all |
| Policy | Record (_dmarc.c18r.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:postmaster@c18r.dk,mailto:claus437@gmail.com; pct=100 |
| www | 77.213.67.90 (AS9158) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~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: 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 | 2026092501 |
| 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 | ONE.COM A/S |
| Registered | 2020-03-16 |
| Expires | 2028-03-31 (530d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 17:11:53 shown | 532ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 00:00:51 | 555ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 00:30:17 | 627ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 08:24:52 | 670ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-29 18:56:23 | 1319ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 10:24:18 | 515ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-12 08:48:11 | 6743ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-26 05:55:56 | 779ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 14:28:13 | 775ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 02:14:07 | 471ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 11:35:07 | 4490ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 20:43:08 | 1120ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 18:50:05 | 394ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 18:41:10 | 585ms | 2 NS 1 A 1 MX | 🔒 Secure |