reef-shark.dk DNS records

🖥️ Nameservers3 records 45ms

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 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.177	3600s	linux156.unoeuro.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 62ms

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	94.231.103.177
🔶 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 64ms

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

📝 TXT Records1 records 157ms

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

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.reef-shark.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 53ms

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…

🔐 DNSSEC81ms

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

🏷️ SOA0ms

Field	Value
Serial	2025042300
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

45ms

A

38ms

MX

62ms

AAAA

51ms

TXT

157ms

CAA

56ms

HTTPS

39ms

TLSA

53ms

SOA

0ms

MTA-STS

80ms

DNSSEC

81ms

SRV

64ms

Total

642ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 22:40:42	642ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 15:58:11	650ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-16 14:47:54	619ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 08:54:32	2616ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-12 08:25:33	687ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-10 15:32:03	886ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-09 03:07:29	651ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-06 20:15:37	746ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-05 17:33:29	654ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-04 15:18:36	1143ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-07-03 00:47:33	502ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-06-24 22:53:11	2761ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 06:11:50	696ms	3 NS 1 A 1 MX	🔒 Secure	View