cetro.dk is a .dk domain served by 2 nameservers (houston.ns.cloudflare.com, liv.ns.cloudflare.com). It was registered on 26 March 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.150.1.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|
| houston.ns.cloudflare.com | — | — | — |
| liv.ns.cloudflare.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 216.150.1.1 | — | — | AS16509 | Amazon.com, Inc. | 216.150.1.0/24 | 🇺🇸 United States | — |
| TXT Record |
|---|
| google-site-verification=blnCeW685_JbMrI7c6m5ObAZ9D-bJYwINYidzRPDOfQ |
| v=spf1 ip4:45.148.28.147 ip4:172.104.230.139 include:_spf.google.com ~all |
| Policy | Record (cetro.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:45.148.28.147 ip4:172.104.230.139 include:_spf.google.com ~all |
| Policy | Record (_dmarc.cetro.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:58a17d9634f84282ab94745e2bde27f0@dmarc-reports.cloudflare.net,mailto:morten@cetro.dk |
| www CNAME | e93b79b009335301.vercel-dns-017.com (all on vercel-dns-017.com) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| — | 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.
DNS lookups: 1/10 · policy: ~all
No problems found| 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 | 2407093586 |
| Primary NS (MNAME) | houston.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2012-03-26 |
| Expires | 2027-03-31 (164d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 11:20:38 | 1464ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-10-03 07:34:08 | 546ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-24 06:46:09 | 877ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-24 04:44:36 | 847ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-18 04:09:22 | 919ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-12 23:06:44 | 872ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-11 12:05:41 | 1590ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-04 09:34:52 | 2219ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-01 03:36:09 | 1397ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-08-29 14:48:38 | 1536ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-07-08 13:52:15 | 3389ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-06-25 11:28:49 | 3385ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-06-24 00:41:14 | 999ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-06-21 09:14:30 | 1191ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 15:36:40 | 772ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-06-19 10:16:16 | 5577ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-06-16 20:10:36 shown | 561ms | 2 NS 1 A 5 MX | 🔓 Insecure |