g4s-alarm.dk is a .dk domain served by 6 nameservers (pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org and 3 more). It was registered on 25 October 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.221.51.90 is hosted by G4S Security Services A/S (AS199718) in Denmark. Mail is handled by mail1.g4s-alarm.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|
| pdns1.ultradns.net | — | — | — |
| pdns2.ultradns.net | — | — | — |
| pdns3.ultradns.org | — | — | — |
| pdns4.ultradns.org | — | — | — |
| pdns5.ultradns.info | — | — | — |
| pdns6.ultradns.co.uk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.221.51.90 | — | — | AS199718 | G4S Security Services A/S | 91.221.50.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mail1.g4s-alarm.dk | 35.241.200.19 | 19.200.241.35.bc.googleusercontent.com | AS396982 Google LLC |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves g4s-alarm.dk: no address www.g4s-alarm.dk: no address |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2025121600 |
| Primary NS (MNAME) | pdns1.ultradns.net |
| Responsible (RNAME) | jon@stock.safenames.co.uk |
| Refresh | 86400s |
| Retry | 86400s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 60s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2011-10-25 |
| Expires | 2026-10-31 (4d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-24 07:35:24 | 1972ms | 6 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-03 10:36:57 | 579ms | 6 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 12:16:26 | 611ms | 6 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 03:56:19 | 658ms | 6 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 01:02:30 | 9982ms | 6 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 16:34:44 | 616ms | 6 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-02 00:29:14 | 2864ms | 6 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 09:22:05 shown | 1055ms | 6 NS 1 A 1 MX | 🔓 Insecure |