crt-tech.dk

📜 Historical scan 2026-06-16 23:08:11 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

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.

🖥️ Nameservers#

2 records 352ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.netgiganten.dk	—	—	—
ns2.netgiganten.dk	—	—	—

🌍 A Records#

1 records 307ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.242.130.11	—	web1.netgiganten.dk	AS62121	Christian Ebsen ApS	195.242.130.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 285ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	crt-tech.dk	195.242.130.11	web1.netgiganten.dk	AS62121 Christian Ebsen ApS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 426ms

TXT Record
v=spf1 ip4:195.242.130.11 include:_spf.netgiganten.dk ip4:88.99.241.164 +a +mx ~all

✉️ SPF#

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

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 18:38:58

www CNAME	crt-tech.dk (all on crt-tech.dk) → 195.242.130.11 (AS62121)
www vs bare domain	Same network crt-tech.dk: 195.242.130.11 (AS62121) www.crt-tech.dk: 195.242.130.11 (AS62121)
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

✍️ DKIM keys#

1 found

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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

447ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

309ms

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

📋 Registration#

WHOIS fetched 2026-10-08 00:05:03

Field	Value
Registrar	dns.services ApS
Registered	2019-01-14
Expires	2027-01-31 (98d)

📋 WHOIS#

⏱️ Lookup Timing#

352ms

307ms

285ms

AAAA

296ms

TXT

426ms

CAA

309ms

HTTPS

250ms

TLSA

157ms

SOA

309ms

MTA-STS

279ms

DNSSEC

447ms

SRV

0ms

Total

1473ms

🕐 Scan History#

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	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 shown	1473ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 23:00:12	615ms	2 NS 1 A 1 MX	🔒 Secure