ctx.dk DNS records

🖥️ Nameservers2 records 77ms

Nameserver	IP addresses	PTR	ASN / ISP
sky.ns.cloudflare.com	108.162.194.2 162.159.38.2 172.64.34.2 2606:4700:50::a29f:2602 2803:f800:50::6ca2:c202 2a06:98c1:50::ac40:2202	sky.ns.cloudflare.com sky.ns.cloudflare.com sky.ns.cloudflare.com sky.ns.cloudflare.com sky.ns.cloudflare.com sky.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
watson.ns.cloudflare.com	108.162.195.23 162.159.44.23 172.64.35.23 2606:4700:58::a29f:2c17 2803:f800:50::6ca2:c317 2a06:98c1:50::ac40:2317	watson.ns.cloudflare.com watson.ns.cloudflare.com watson.ns.cloudflare.com watson.ns.cloudflare.com watson.ns.cloudflare.com watson.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 111ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.7.203	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.188.2	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 66ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	ctx-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::f 2a01:111:f403:ca09::5 2a01:111:f403:ca09::b 52.101.68.36 52.101.73.19 52.101.73.2 52.101.73.6	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am6pr04cu00306.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.7.203

🔷 AAAA Records (IPv6)2 records 135ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:7cb	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:bc02	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 96ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.7.203,172.67.188.2 ech=AEX+DQBB8gAgACDHL35BlWDKWz22DYtOK4TpRMUwpkRrAmRPvUVhVtpJLgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:7cb,2606:4700:3037::ac43:bc02

📝 TXT Records2 records 386ms

TXT Record
MS=ms73062789
v=spf1 ip4:85.191.84.58 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (ctx.dk)
-all (hard fail)	v=spf1 ip4:85.191.84.58 include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.ctx.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:ksl@ctx.dk; ruf=mailto:ksl@ctx.dk; sp=none; fo=1;

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC297ms

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

🏷️ SOA0ms

Field	Value
Serial	2413397835
Primary NS (MNAME)	sky.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

77ms

A

111ms

MX

66ms

AAAA

135ms

TXT

386ms

CAA

149ms

HTTPS

96ms

TLSA

901ms

SOA

0ms

MTA-STS

169ms

DNSSEC

297ms

SRV

175ms

Total

2640ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 17:01:48	2640ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-27 15:59:21	1170ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-26 15:10:31	886ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-24 13:27:31	4464ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-23 13:14:21	5707ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-22 12:26:59	10616ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-21 12:17:28	2893ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-20 11:55:51	2376ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-19 05:50:06	1992ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-18 02:46:39	3590ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-15 19:58:27	1723ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-14 03:08:09	5212ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-10 05:23:36	2258ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-07 19:03:48	2019ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-31 08:36:14	1544ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-26 10:05:37	4150ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-25 09:49:07	18022ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-23 08:29:23	1932ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-21 20:31:27	9100ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-20 19:15:21	2232ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-19 11:27:41	1281ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-18 10:47:50	10985ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-16 20:21:40	9304ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-14 09:01:59	10309ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-13 06:11:52	9461ms	2 NS 2 A 1 MX	🔒 Secure	View