rexbirk.dk DNS records

🖥️ Nameservers3 records 41ms

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 Records2 records 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.185.159.145	600s	—	AS53831	Squarespace, Inc.	198.185.159.0/24	🇺🇸 United States	—
198.49.23.145	600s	—	AS53831	Squarespace, Inc.	198.49.23.0/24	🇺🇸 United States	—

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	2280s	rexbirk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::f 2a01:111:f403:ca09::1 2a01:111:f403:ca09::24 52.101.68.32 52.101.68.8 52.101.73.123 52.101.73.16	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-as2pr05cu00100.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	autodiscover.outlook.com → 40.104.116.56
🔶 Autoconfig	ext-cust.squarespace.com → 198.49.23.144

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 59ms

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

📝 TXT Records2 records 127ms

TXT Record
MS=ms51168080
v=spf1 include:spf.simply.com include:spf.protection.outlook.com -all

✉️ SPF

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

🔗 TLSA / DANE

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

🔐 DNSSEC79ms

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

🏷️ SOA0ms

Field	Value
Serial	2025070802
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

41ms

A

43ms

MX

40ms

AAAA

41ms

TXT

127ms

CAA

39ms

HTTPS

35ms

TLSA

376ms

SOA

0ms

MTA-STS

51ms

DNSSEC

79ms

SRV

59ms

Total

908ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 13:27:16	908ms	3 NS 2 A 1 MX	🔒 Secure	View
2026-08-26 15:55:46	1903ms	3 NS 2 A 1 MX	🔒 Secure	View
2026-06-26 03:30:52	955ms	3 NS 2 A 1 MX	🔒 Secure	View
2026-06-23 08:54:34	782ms	3 NS 2 A 1 MX	🔒 Secure	View
2026-06-20 23:30:35	676ms	3 NS 2 A 1 MX	🔒 Secure	View
2026-06-19 12:24:38	1001ms	3 NS 2 A 1 MX	🔒 Secure	View
2026-06-17 15:16:18	1699ms	3 NS 2 A 1 MX	🔒 Secure	View