crt-tech.dk is a .dk domain served by 2 nameservers (ns1.netgiganten.dk, ns2.netgiganten.dk). It was registered on 14 January 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.242.130.11 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by crt-tech.dk. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 195.242.130.11 | 3600s | web1.netgiganten.dk | AS62121 | Christian Ebsen ApS | 195.242.130.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | crt-tech.dk | 195.242.130.11 | web1.netgiganten.dk | AS62121 Christian Ebsen ApS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 195.242.130.11 |
| 🔶 Autoconfig | 195.242.130.11 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | cpanelemaildiscovery.cpanel.net |
| TXT Record |
|---|
| v=spf1 ip4:195.242.130.11 include:_spf.netgiganten.dk ip4:88.99.241.164 +a +mx ~all |
| Policy | Record (crt-tech.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:195.242.130.11 include:_spf.netgiganten.dk ip4:88.99.241.164 +a +mx ~all |
| www CNAME | crt-tech.dk (all on crt-tech.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 3/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.crt-tech.dk | xlL7IfO3trhhQJMLd5wq1QKDKMjvFJEYJRQpBYz4rsc |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061201 |
| Primary NS (MNAME) | ns1.netgiganten.dk |
| Responsible (RNAME) | monitor@netgiganten.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | dns.services ApS |
| Registered | 2019-01-14 |
| Expires | 2027-01-31 (98d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 18:38:58 | 786ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 02:45:07 | 503ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 20:32:13 | 441ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 16:46:15 | 471ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 06:38:56 | 749ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 02:15:40 shown | 1165ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 00:55:48 | 528ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 23:31:50 | 65535ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 23:10:35 | 380ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 23:08:11 | 1473ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 23:00:12 | 615ms | 2 NS 1 A 1 MX | 🔒 Secure |