simonclausen.dk is a .dk domain served by 2 nameservers (olga.ns.cloudflare.com, todd.ns.cloudflare.com). It was registered on 25 May 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.21.157.88 is hosted by Amazon.com, Inc. (AS14618) in United States. Mail is handled by katla.inota.dk. The zone is DNSSEC-signed and validates, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 23.21.157.88 | 300s | ec2-23-21-157-88.compute-1.amazonaws.com | AS14618 | Amazon.com, Inc. | 23.20.0.0/14 | 🇺🇸 United States | Ashburn |
| 23.21.234.173 | 300s | ec2-23-21-234-173.compute-1.amazonaws.com | AS14618 | Amazon.com, Inc. | 23.20.0.0/14 | 🇺🇸 United States | Ashburn |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | katla.inota.dk | 2a01:4f8:c17:67ac::1 78.46.122.25 |
katla.inota.dk katla.inota.dk |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 mx ip4:78.46.122.25/32 ip6:2a01:4f8:c17:67ac::1/64 -all |
| Policy | Record (simonclausen.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx ip4:78.46.122.25/32 ip6:2a01:4f8:c17:67ac::1/64 -all |
| Policy | Record (_dmarc.simonclausen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:e6546d9bb3c94a8c8bd4a7816aa6e7cc@dmarc-reports.cloudflare.net |
| www CNAME | simonclausen.dk (all on simonclausen.dk) |
| www vs bare domain | Same network simonclausen.dk: 23.21.157.88 23.21.234.173 (AS14618) www.simonclausen.dk: 23.21.157.88 23.21.234.173 (AS14618) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~4096 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 | 2413254647 |
| Primary NS (MNAME) | olga.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 | 2012-05-25 |
| Expires | 2027-05-31 (223d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 20:43:13 | 1530ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-18 18:46:49 | 2009ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-14 16:04:42 | 669ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-07 07:09:20 | 1935ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-22 06:04:11 | 2183ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-01 09:14:12 | 5443ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-27 19:36:33 shown | 1355ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-10 10:33:53 | 3661ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-03 21:14:02 | 994ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-20 12:59:49 | 9438ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-10 07:36:29 | 1305ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-17 17:18:14 | 1651ms | 2 NS 2 A 1 MX | 🔒 Secure |