extendio.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 14 May 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.221 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by smtp.google.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 46.30.215.221 | 3600s | webcluster1.webpod18-cph3.g1i.one | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:108:eb:382d:eee:e034 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| google-site-verification=xoAXbAK0VSx3UoYGlnZH_8GU5FQAhEqf9ZU__kLBOf4 |
| Policy | Record (_dmarc.extendio.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject |
| www | 46.30.215.221 2a02:2350:5:108:eb:382d:eee:e034 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network extendio.dk: 46.30.215.221 2a02:2350:5:108:eb:382d:eee:e034 (AS51468) www.extendio.dk: 46.30.215.221 2a02:2350:5:108:eb:382d:eee:e034 (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| 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.
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100201 |
| 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 | 2026-05-14 |
| Expires | 2027-05-13 (206d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 17:17:24 shown | 678ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 16:54:43 | 586ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 17:55:12 | 585ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 05:17:31 | 840ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 18:23:00 | 8716ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-06 05:07:04 | 1787ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-21 01:04:10 | 1063ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 04:57:29 | 804ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-22 07:11:34 | 502ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-21 23:18:38 | 1117ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 09:10:00 | 1289ms | 2 NS 1 A 1 MX | 🔓 Insecure |