rrff.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 February 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.31.76.89 is hosted by DLX A/S (AS47527) in Denmark. Mail is handled by mailscanner.powerhosting.dk, backup-mx.powerhosting.dk. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 185.31.76.89 | — | serv09.powerhosting.dk | AS47527 | DLX A/S | 185.31.76.0/22 | 🇩🇰 Denmark | Herning |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a00:b920:2:1337::89 | — | — | AS47527 | DLX A/S | 2a00:b920:0:0:0:0:0:0/29 | 🇩🇰 Denmark | Herning |
| TXT Record |
|---|
| SR5926-DK |
| v=spf1 include:_spf.powerhosting.dk mx -all |
| Policy | Record (rrff.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.powerhosting.dk mx -all |
| Policy | Record (_dmarc.rrff.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@powerhosting.dk; ruf=mailto:dmarc@powerhosting.dk; adkim=r; aspf=r |
| www | 185.31.76.89 2a00:b920:2:1337::89 (AS47527) (address records, no CNAME) |
| www vs bare domain | Same network rrff.dk: 185.31.76.89 2a00:b920:2:1337::89 (AS47527) www.rrff.dk: 185.31.76.89 2a00:b920:2:1337::89 (AS47527) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | ph._domainkey.powerhosting.dk | 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: 2/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.backup-mx.powerhosting.dk | DANE-EE · SPKI · SHA-256 | 3C02E6711E7E08A1889E67D27C35D230… |
| SMTP _25._tcp.mailscanner.powerhosting.dk | DANE-EE · SPKI · SHA-256 | 3C02E6711E7E08A1889E67D27C35D230… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026032401 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2011-02-03 |
| Expires | 2027-02-28 (133d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 04:00:00 | 760ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-03 03:59:05 | 4939ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 03:22:27 | 1225ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 02:30:25 | 977ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-23 21:41:57 | 2230ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-28 08:57:30 | 1574ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-27 08:40:21 | 1138ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 13:21:00 shown | 1750ms | 2 NS 1 A 2 MX | 🔒 Secure |