firstbackup.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 June 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.18.239.5 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by mx.spamfilter-online.com, mx2.spamfilter-online.com and 2 more. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 94.18.239.5 | 3600s | — | AS31027 | GlobalConnect A/S | 94.18.0.0/16 | 🇩🇰 Denmark | Hvidovre |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.spamfilter-online.com | 94.18.239.24 | — | AS31027 GlobalConnect A/S |
| 20 | 3600s | mx2.spamfilter-online.com | 94.18.239.24 | — | AS31027 GlobalConnect A/S |
| 30 | 3600s | mx3.spamfilter-online.com | 94.18.239.24 | — | AS31027 GlobalConnect A/S |
| 40 | 3600s | mx4.spamfilter-online.com | 94.18.239.24 | — | AS31027 GlobalConnect A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook-online.dk → 94.18.239.4 |
| TXT Record |
|---|
| v=spf1 include:spf.outlook-online.dk -all |
| Policy | Record (firstbackup.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.outlook-online.dk -all |
| www CNAME | webserver1.fconsult.dk (all on fconsult.dk) → 94.18.239.5 (AS31027) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim.outlook-online.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: 1/10 · 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 | 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 | Punktum dk A/S (direct) |
| Registered | 2010-06-22 |
| Expires | 2029-06-30 (987d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 22:08:39 shown | 1805ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-01 21:56:41 | 520ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 21:49:32 | 650ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-29 19:39:18 | 3240ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-25 18:52:25 | 647ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-10 14:56:51 | 3856ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-27 05:39:58 | 604ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 17:52:17 | 1443ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-26 05:54:46 | 1337ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 23:34:26 | 749ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 09:50:35 | 1009ms | 2 NS 1 A 4 MX | 🔒 Secure |