xbook.dk DNS records

🖥️ Nameservers3 records 136ms

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 129ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.170	—	linux281.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 133ms

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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 679ms

TXT Record
google-site-verification=QUE2J-i58QkUifY1jKvB82K88OuR9WwOm37tmirojEo
v=spf1 include:spf.simply.com -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.xbook.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 128ms

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

🔐 DNSSEC300ms

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

🏷️ SOA125ms

Field	Value
Serial	2025081600
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

136ms

A

129ms

MX

133ms

AAAA

134ms

TXT

679ms

CAA

135ms

HTTPS

124ms

TLSA

128ms

SOA

125ms

MTA-STS

37ms

DNSSEC

300ms

SRV

0ms

Total

1481ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 21:52:25	178ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-26 20:59:24	174ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-24 18:12:32	194ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-23 14:44:24	811ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-22 09:14:57	2682ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-21 09:06:26	5041ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-20 07:09:12	1179ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-19 06:03:42	1761ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-17 19:54:15	805ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-16 10:56:50	829ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-14 23:48:41	3639ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-13 21:34:24	3307ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-12 14:49:36	820ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-11 03:40:11	2221ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-10 02:29:40	4369ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-09 01:40:11	770ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-07 20:58:00	8634ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-06 15:33:34	771ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-08-03 01:21:53	698ms	1 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 12:16:07	1481ms	3 NS 1 A 1 MX	🔒 Secure	View