retur.dk DNS records

🖥️ Nameservers3 records 44ms

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 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
216.150.1.1	3600s	—	AS16509	Amazon.com, Inc.	216.150.1.0/24	🇺🇸 United States	—

📧 MX Records1 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	retur-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::b 2a01:111:f403:ca04::f 2a01:111:f403:ca09::6 52.101.68.0 52.101.68.29 52.101.73.19 52.101.73.2	mail-db5pr02cu00100.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as9pr07cu00302.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records2 records 103ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	retur-dk.mail.protection.outlook.com
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records3 records 160ms

TXT Record
google-site-verification=-v76rdkQLLDHWKZktDoeygJgQBIpBsitRshVqFNDus0
MS=ms87884954
v=spf1 ip4:87.63.164.46 ip4:80.62.148.254 include:spf.protection.outlook.com include:spf-eu.emailsignatures365.com include:servers.mcsv.net -all

✉️ SPF

Policy	Record (retur.dk)
-all (hard fail)	v=spf1 ip4:87.63.164.46 ip4:80.62.148.254 include:spf.protection.outlook.com include:spf-eu.emailsignatures365.com include:servers.mcsv.net -all

📨 DMARC

Policy	Record (_dmarc.retur.dk)
p=reject	v=DMARC1; p=reject; fo=1; pct=100; rua=mailto:dmarcreports@bcs.dk; sp=reject; adkim=r; aspf=r;

📬 MTA-STS138ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	202606169132255Z
max_age	2419200s
Policy MX	*.mail.protection.outlook.com

📈 TLSRPT

Status	Report address (rua)
✓ Enabled	mailto:tlsreports@bcs.dk

📜 CAA Records8 records 40ms

Flags	Tag	Value
0	iodef	mailto:hostmaster@bcs.dk
0	issue	digicert.com
0	issue	entrust.net
0	issue	globalsign.com
0	issue	letsencrypt.org
0	issue	microsoft.com
0	issuewild	;
0	issuewild	letsencrypt.org

🔗 TLSA / DANE

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

🔐 DNSSEC92ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082000
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

44ms

A

36ms

MX

34ms

AAAA

40ms

TXT

160ms

CAA

40ms

HTTPS

63ms

TLSA

723ms

SOA

0ms

MTA-STS

138ms

DNSSEC

92ms

SRV

103ms

Total

1787ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-21 00:19:51	1787ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-22 18:55:20	1728ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-10 15:06:53	1250ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 15:37:34	2022ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 16:29:00	1319ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 00:30:21	1001ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 09:51:46	1242ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 00:52:14	1051ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 00:02:47	1267ms	3 NS 1 A 1 MX	🔒 Secure	View