nierfeldt.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 14 May 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.160 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod14-cph3.one.com, mx2.pub.mailpod14-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.160 | 3600s | webcluster33.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod14-cph3.one.com | 185.10.9.212 | mx1.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod14-cph3.one.com | 185.10.9.213 | mx2.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod14-cph3.one.com | 185.10.9.214 | mx3.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod14-cph3.one.com | 185.10.9.215 | mx4.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:8000:f8c7:e478:80d2 | 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 (nierfeldt.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| Policy | Record (_dmarc.nierfeldt.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=dmarc@nierfeldt.dk; ruf=dmarc@nierfeldt.dk |
| www | 77.111.240.160 2a02:2350:5:102:8000:f8c7:e478:80d2 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network nierfeldt.dk: 77.111.240.160 2a02:2350:5:102:8000:f8c7:e478:80d2 (AS51468) www.nierfeldt.dk: 77.111.240.160 2a02:2350:5:102:8000:f8c7:e478:80d2 (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.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx2.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx3.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx4.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100401 |
| 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 | 1997-05-14 |
| Expires | 2027-06-30 (255d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 22:30:09 shown | 471ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-07 14:36:45 | 984ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-22 23:35:06 | 1069ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-09 00:43:17 | 1118ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-05 01:24:18 | 1056ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-29 04:37:23 | 755ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-26 11:50:37 | 7986ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 04:08:50 | 734ms | 2 NS 1 A 4 MX | 🔒 Secure |