retur.dk

📜 Historical scan 2026-10-03 05:38:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

retur.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 23 October 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.150.1.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by retur-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 31ms

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 Records#

1 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
216.150.1.1	60s	—	AS16509	Amazon.com, Inc.	216.150.1.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	retur-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:c967::a 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::10 52.101.209.153 52.101.209.31 52.101.68.15 52.101.68.8	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-cpjpr05cu00102.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-du0pr03cu00100.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

2 records 51ms

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 Records#

3 records 143ms

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-STS#

130ms

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 Records#

8 records 49ms

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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 18:02:37

www CNAME	0910068be2436992.vercel-dns-016.com (all on vercel-dns-016.com) → 216.150.1.1 216.150.16.1 (AS16509)
www vs bare domain	Same network retur.dk: 216.150.1.1 (AS16509) www.retur.dk: 216.150.1.1 216.150.16.1 (AS16509)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-retur-dk._domainkey.elretur.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

102ms

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

🏷️ SOA#

1152ms

Field	Value
Serial	2026100200
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-14 11:02:21

Field	Value
Registrar	Simply.com A/S
Registered	1998-10-23
Expires	2026-12-31 (70d)

🔗 Same registrant#

2 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
err-as.dk	Simply.com A/S
fiskeriretur.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

31ms

33ms

38ms

AAAA

28ms

TXT

143ms

CAA

49ms

HTTPS

33ms

TLSA

609ms

SOA

1152ms

MTA-STS

130ms

DNSSEC

102ms

SRV

51ms

Total

2609ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 18:02:36	2665ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-09 11:04:41	1553ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-07 10:06:46	963ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-03 05:38:41 shown	2609ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-01 05:29:10	1230ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-24 01:22:33	1148ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-18 02:09:18	1259ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-21 00:19:51	1787ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-22 18:55:20	1728ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-10 15:06:53	1250ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-28 15:37:34	2022ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-22 16:29:00	1319ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-22 00:30:21	1001ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 09:51:46	1242ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-20 00:52:14	1051ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-18 00:02:47	1267ms	3 NS 1 A 1 MX	🔒 Secure