kerfo.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 1 May 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.48 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 46.30.213.48 | 3598s | webcluster2.webpod12-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10a:8086:bcb:de1a:13af | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com ~all |
| Policy | Record (kerfo.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| www | 46.30.213.48 2a02:2350:5:10a:8086:bcb:de1a:13af (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network kerfo.dk: 46.30.213.48 2a02:2350:5:10a:8086:bcb:de1a:13af (AS51468) www.kerfo.dk: 46.30.213.48 2a02:2350:5:10a:8086:bcb:de1a:13af (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026062003 |
| 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 | 2006-05-01 |
| Expires | 2027-05-31 (223d) |
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).
| Domain | Registrar |
|---|---|
| blue-chip.dk | ONE.COM A/S |
| christins.dk | Punktum dk A/S (direct) |
| gudmes.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 16:01:14 | 1547ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-05 12:23:13 | 1896ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-04 11:56:43 | 417ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 22:32:36 | 610ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-17 13:20:27 | 1214ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-06 01:40:33 | 1038ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-20 04:27:27 | 1816ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-09 10:50:05 | 1240ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-02 08:37:28 | 1428ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-22 11:39:32 | 871ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-17 02:51:02 | 3126ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-06 09:05:15 | 4436ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-03 01:17:22 | 978ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-21 11:04:03 | 1394ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 22:05:46 shown | 4091ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 12:06:14 | 706ms | 2 NS 1 A 4 MX | 🔒 Secure |