cowins.dk

Records from scan: 2026-10-09 13:21:33 · 2438ms total · last checked 2026-10-17 02:37 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cowins.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 11 October 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.171 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by cowins-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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 36ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.171	600s	prolinux3.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	cowins-dk.mail.protection.outlook.com	2a01:111:f403:ca21::10 2a01:111:f403:ca48::10 2a01:111:f403:ca48::12 2a01:111:f403:ca48::e 52.101.181.153 52.101.181.156 52.101.68.12 52.101.91.156	mail-matpr05cu00100.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-maspr04cu00104.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

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 70ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 154ms

TXT Record
v=DMARC1; p=none; rua=mailto:dmarc@cowins.dk; pct=100
v=spf1 include:spf.protection.outlook.com include:_custspf.one.com include:emsd1.com include:_spf.online.superoffice.com ip4:34.141.243.80 ~all

✉️ SPF#

Policy	Record (cowins.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:_custspf.one.com include:emsd1.com include:_spf.online.superoffice.com ip4:34.141.243.80 ~all

📨 DMARC#

Policy	Record (_dmarc.cowins.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc@cowins.dk;ruf=mailto:dmarc@cowins.dk

📬 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

🧩 Web & zone#

checked 2026-10-09 13:21:33

www	185.21.41.171 (AS48854) (address records, no CNAME)
www vs bare domain	Same network cowins.dk: 185.21.41.171 (AS48854) www.cowins.dk: 185.21.41.171 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-cowins-dk._domainkey.cowinsint.onmicrosoft.com	RSA · ~1024 bit below 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: 5/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

111ms

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

🏷️ SOA#

1195ms

Field	Value
Serial	2026100901
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-09 13:49:52

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-10-11
Expires	2026-10-31 (14d)

📋 WHOIS#

⏱️ Lookup Timing#

36ms

31ms

AAAA

40ms

TXT

154ms

CAA

40ms

HTTPS

35ms

TLSA

576ms

SOA

1195ms

MTA-STS

69ms

DNSSEC

111ms

SRV

70ms

Total

2438ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 13:21:33 shown	2438ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 23:27:30	1145ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 20:54:27	1148ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-12 05:36:40	1287ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-07 18:00:53	1735ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 21:01:47	1019ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 18:18:38	5471ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-12 22:59:06	1366ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-08 16:26:34	9308ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 05:41:12	3497ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 21:32:50	941ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 22:35:19	824ms	2 NS 1 A 1 MX	🔒 Secure