123syn.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 July 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 52.17.235.195 is hosted by Amazon.com, Inc. (AS16509) in Ireland. Mail is handled by mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-cph3.one.com and 2 more. 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 |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 52.17.235.195 | — | ec2-52-17-235-195.eu-west-1.compute.amazonaws.com | AS16509 | Amazon.com, Inc. | 52.16.0.0/14 | 🇮🇪 Ireland | — |
| www | 52.17.235.195 (AS16509) (address records, no CNAME) |
| 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 |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx2.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx3.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx4.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026053101 |
| 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 | 2015-07-02 |
| Expires | 2027-07-31 (279d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 19:48:35 | 715ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-07 17:11:45 | 758ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 13:05:53 | 814ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-23 11:29:36 | 2543ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-28 10:59:22 | 806ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-25 14:08:37 | 655ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-09 11:45:12 | 5072ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-06-21 19:24:36 | 724ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-06-16 12:39:26 shown | 951ms | 2 NS 1 A 4 MX | 🔓 Insecure |