ctrb.dk DNS records

🖥️ Nameservers2 records 33ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
162.159.135.42	3600s	—	AS13335	Cloudflare, Inc.	162.159.128.0/19	—	—

📧 MX Records5 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	173.194.222.26 2a00:1450:4010:c08::1a 2a00:1450:4010:c08::1a	lo-in-f26.1e100.net lg-in-f26.1e100.net lg-in-x1a.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx3.googlemail.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	130.211.95.47
🔶 Autoconfig	130.211.95.47

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 218ms

TXT Record
ca3-46894efcc424477fb8ca4658f56eea09
google-site-verification=VLgtLXJR5MjriN-_zMjY6cs4m_er0xmVeNYisHhkvFQ
v=spf1 include:_spf.google.com include:relay.kinstamailservice.com include:relay.mailchannels.net ip4:162.159.135.42 ~all ~all

✉️ SPF

Policy	Record (ctrb.dk)
~all (soft fail)	v=spf1 include:_spf.google.com include:relay.kinstamailservice.com include:relay.mailchannels.net ip4:162.159.135.42 ~all ~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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.ctrb.dk	ctrb.dk.kinstavalidation.app
TXT	ctrb.dk.kinstavalidation.app	itSvZ7t-AUdBUTuggAZ35z6XmWYA5ytEbv1AYUTSd_g
TXT	ctrb.dk.kinstavalidation.app	oRx4Z02PGZJdk7-9rq115Yk2M8soVsQsAiD0MmgpyjE

🔗 TLSA / DANE

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

🔐 DNSSEC117ms

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

🏷️ SOA38ms

Field	Value
Serial	2023052501
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

33ms

A

42ms

MX

61ms

AAAA

41ms

TXT

218ms

CAA

39ms

HTTPS

47ms

TLSA

60ms

SOA

38ms

MTA-STS

57ms

DNSSEC

117ms

SRV

62ms

Total

938ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-02 00:02:26	938ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-16 23:11:28	639ms	2 NS 1 A 5 MX	🔒 Secure	View