c-tan.dk DNS records

🖥️ Nameservers3 records 99ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 102ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.138	3600s	linux127.unoeuro.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 95ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	94.231.103.138
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 160ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records1 records 300ms

TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (c-tan.dk)
-all (hard fail)	v=spf1 include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.c-tan.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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 / DANE2 records 90ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…

🔐 DNSSEC213ms

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

🏷️ SOA0ms

Field	Value
Serial	2026070502
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

99ms

A

102ms

MX

95ms

AAAA

98ms

TXT

300ms

CAA

92ms

HTTPS

88ms

TLSA

90ms

SOA

0ms

MTA-STS

172ms

DNSSEC

213ms

SRV

160ms

Total

1110ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-08 22:10:50	1110ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-06 20:09:15	1991ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-04 23:06:33	1032ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-02 23:12:27	480ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 18:58:03	4278ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 16:31:01	894ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 21:23:08	2767ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 07:13:27	716ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 04:58:14	695ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 18:48:44	1624ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 18:40:39	306ms	0 NS 0 A 0 MX	❓ Unknown	View