sourceip.dk is a .dk domain served by 2 nameservers (desiree.ns.cloudflare.com, yadiel.ns.cloudflare.com). It was registered on 23 June 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 83.88.251.84 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.0tx.dk, pmg.domingo.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 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 |
|---|---|---|---|---|---|---|---|
| 83.88.251.84 | 300s | 83-88-251-84-cable.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 83.88.192.0/18 | 🇩🇰 Denmark | Taastrup |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.0tx.dk | 135.181.98.40 2a01:4f9:c011:bc01::1 |
mail.0tx.dk mail.0tx.dk |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| 40 | 300s | pmg.domingo.dk | 2a01:4f8:c012:9adf::1 49.13.214.145 |
pmg.domingo.dk pmg.domingo.dk |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | sourceip.dk → 83.88.251.84 |
| 🔶 Autoconfig | sourceip.dk → 83.88.251.84 |
| TXT Record |
|---|
| v=spf1 include:_spf.0tx.dk -all |
| Policy | Record (sourceip.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.0tx.dk -all |
| Policy | Record (_dmarc.sourceip.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:e8d5ed3a0c8d4b11b62f70e87f42da20@dmarc-reports.cloudflare.net,mailto:dmarc@sourceip.dk |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com; cansignhttpexchanges=yes |
| 0 | issue | letsencrypt.org |
| 0 | issue | pki.goog; cansignhttpexchanges=yes |
| 0 | issue | ssl.com |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com; cansignhttpexchanges=yes |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | pki.goog; cansignhttpexchanges=yes |
| 0 | issuewild | ssl.com |
| www CNAME | sourceip.dk (all on sourceip.dk) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~1024 bit below 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| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sourceip.dk | sourceip.dk |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.0tx.dk | DANE-EE · SPKI · SHA-256 | CA0670673BBB301601491AE6821DB45B… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2415918362 |
| Primary NS (MNAME) | desiree.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Domænehajen ApS |
| Registered | 2007-06-23 |
| Expires | 2027-07-31 (287d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 17:01:34 shown | 917ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-30 04:00:19 | 1205ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 00:14:59 | 2196ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-06 13:08:03 | 1222ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-27 22:06:00 | 3025ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-10 23:47:29 | 3613ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-16 22:03:25 | 2919ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-03 14:59:26 | 1690ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-30 16:26:42 | 2011ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 13:26:15 | 1286ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-23 17:12:30 | 1299ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 11:39:38 | 1104ms | 2 NS 1 A 2 MX | 🔒 Secure |