cowins.dk DNS records

🖥️ Nameservers2 records 48ms

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 Records1 records 38ms

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 Records1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	cowins-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca04::f 2a01:111:f403:ca09::4 2a01:111:f403:ca09::9 52.101.68.25 52.101.68.3 52.101.68.39 52.101.68.5	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du2pr03cu00105.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 Records1 records 68ms

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

📝 TXT Records2 records 178ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC83ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080901
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

48ms

A

38ms

MX

42ms

AAAA

43ms

TXT

178ms

CAA

48ms

HTTPS

51ms

TLSA

373ms

SOA

0ms

MTA-STS

277ms

DNSSEC

83ms

SRV

68ms

Total

1019ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 21:01:47	1019ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-09 18:18:38	5471ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 22:59:06	1366ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-08 16:26:34	9308ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 05:41:12	3497ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 21:32:50	941ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 22:35:19	824ms	2 NS 1 A 1 MX	🔒 Secure	View