firstclass.dk is a .dk domain served by 5 nameservers (ns1pri.webhosting.dk, ns2.mywebtonet.com, ns2.webhosting.dk and 2 more). It was registered on 8 May 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 157.250.160.25 is hosted by Cibicom A/S (AS3342) in Denmark. Mail is handled by webhotel5.webhosting.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1pri.webhosting.dk | — | — | — |
| ns2.mywebtonet.com | — | — | — |
| ns2.webhosting.dk | — | — | — |
| ns3.webhosting.dk | — | — | — |
| ns7.webhosting.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 157.250.160.25 | — | webhotel5.webhosting.dk | AS3342 | Cibicom A/S | 157.250.160.0/20 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | webhotel5.webhosting.dk | 157.250.160.25 | webhotel5.webhosting.dk | AS3342 Cibicom A/S |
| www CNAME | firstclass.dk (all on firstclass.dk) |
| www vs bare domain | Same network firstclass.dk: 144.76.168.29 2a01:4f8:200:442e::2 (AS24940) www.firstclass.dk: 144.76.168.29 2a01:4f8:200:442e::2 (AS24940) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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.
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.webhotel5.webhosting.dk | DANE-TA · SPKI · SHA-256 | FA4EFC305AA17A4FEEE8B29B2DAA8847… |
| SMTP _25._tcp.webhotel5.webhosting.dk | DANE-EE · SPKI · SHA-256 | FA4EFC305AA17A4FEEE8B29B2DAA8847… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026050903 |
| Primary NS (MNAME) | ns1pri.webhosting.dk |
| Responsible (RNAME) | hostmaster@webhosting.dk |
| Refresh | 21600s |
| Retry | 3600s |
| Expire | 14515200s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2026-05-08 |
| Expires | 2027-05-07 (194d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-24 06:17:01 | 1279ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-23 04:28:33 | 588ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-21 19:56:42 | 728ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-20 12:41:49 | 536ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-19 12:12:37 | 1625ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-18 10:46:07 | 782ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-16 08:49:40 | 1406ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-14 04:44:24 | 1944ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-13 01:25:13 | 587ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-11 00:28:55 | 1242ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-09 23:23:46 | 720ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 18:10:15 | 2388ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-07 18:02:07 | 2111ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-06 17:54:33 | 547ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-05 17:25:06 | 816ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 17:20:29 | 2024ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-03 17:17:33 | 1815ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-02 17:16:03 | 750ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 17:14:42 | 966ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 17:07:17 | 1338ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 16:55:33 | 834ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-28 16:44:27 | 715ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 16:34:06 | 746ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-25 16:01:51 | 805ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 15:40:16 | 758ms | 4 NS 1 A 1 MX | 🔓 Insecure |