sanderu.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 17 March 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 151.236.218.48 is hosted by Akamai Connected Cloud (AS63949) in United Kingdom. Mail is handled by mail.sanderu.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 |
|---|---|---|---|---|---|---|---|
| 151.236.218.48 | 600s | mail.sanderu.dk | AS63949 | Akamai Connected Cloud | 151.236.216.0/21 | 🇬🇧 United Kingdom | London |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mail.sanderu.dk | 151.236.218.48 | mail.sanderu.dk | AS63949 Akamai Connected Cloud |
| TXT Record |
|---|
| v=spf1 ip4:151.236.218.48 -all |
| Policy | Record (sanderu.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:151.236.218.48 -all |
| Policy | Record (_dmarc.sanderu.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:c6yvwadg@ag.dmarcian-eu.com; |
| www CNAME | sanderu.dk (all on sanderu.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · 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 | 2026072909 |
| 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 | ONE.COM A/S |
| Registered | 2005-03-17 |
| Expires | 2027-03-31 (156d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 18:21:43 | 1817ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 18:38:38 | 1186ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 13:26:38 | 1023ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 08:03:14 | 839ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 07:56:46 | 793ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 06:36:41 | 528ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 20:14:52 | 928ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 18:34:21 | 778ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 22:51:45 | 689ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 09:12:11 | 730ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-12 06:46:27 | 1018ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-09 10:48:38 | 873ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-30 04:13:03 shown | 4902ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-27 13:44:00 | 2804ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-26 13:00:48 | 743ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-24 11:58:28 | 8732ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-18 17:53:14 | 694ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-13 14:28:22 | 720ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 14:35:40 | 644ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 22:03:05 | 567ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 19:03:08 | 903ms | 2 NS 1 A 1 MX | 🔒 Secure |