csdc.dk DNS records

🖥️ Nameservers2 records 37ms

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 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.16	3600s	webcluster1.webpod12-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 63ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	csdc-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca09:: 2a01:111:f403:ca09::2 2a01:111:f403:ca09::e 52.101.68.21 52.101.68.25 52.101.68.29 52.101.73.8	mail-db9pr02cu00204.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am0pr04cu00500.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)1 records 57ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10a:86:5f57:b6d0:4d27	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 79ms

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

📝 TXT Records3 records 151ms

TXT Record
google-site-verification=XIp8bEmWanODXlZEI0qR8F_PtomW9x71o8v8u_RU6JA
MS=ms96653947
v=spf1 include:spf.protection.outlook.com a:gate1.sikkermail.nu a:gate2.sikkermail.nu include:mail.zendesk.com v=spf1 include:servers.mcsv.net ?all

✉️ SPF

Policy	Record (csdc.dk)
?all (neutral)	v=spf1 include:spf.protection.outlook.com a:gate1.sikkermail.nu a:gate2.sikkermail.nu include:mail.zendesk.com v=spf1 include:servers.mcsv.net ?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)

🔐 DNSSEC115ms

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

🏷️ SOA60ms

Field	Value
Serial	2026060201
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

37ms

A

44ms

MX

63ms

AAAA

57ms

TXT

151ms

CAA

62ms

HTTPS

35ms

TLSA

563ms

SOA

60ms

MTA-STS

49ms

DNSSEC

115ms

SRV

79ms

Total

1083ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 15:59:44	1318ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 00:47:56	1259ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-07 20:00:39	975ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-17 07:18:36	9065ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 10:18:39	1617ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-06 21:55:18	1670ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-01 18:40:05	1659ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 20:16:45	1083ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 21:56:12	984ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 23:06:17	3557ms	2 NS 1 A 1 MX	🔒 Secure	View