ctw.dk DNS records

🖥️ Nameservers2 records 40ms

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
46.30.215.127	3600s	webforward.webpod16-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ctw-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::a 2a01:111:f403:ca09::20 2a01:111:f403:ca09::d 52.101.68.0 52.101.68.27 52.101.68.8 52.101.73.26	mail-db4pr02cu00204.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as9pr05cu01302.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 157ms

TXT Record
MS=ms44031625
S0J0A87263
v=spf1 include:spf.protection.outlook.com include:spf.sn.dk -all

✉️ SPF

Policy	Record (ctw.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.sn.dk -all

📨 DMARC

Policy	Record (_dmarc.ctw.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email;

📬 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)

🔐 DNSSEC78ms

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

🏷️ SOA34ms

Field	Value
Serial	2026032501
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

40ms

A

38ms

MX

37ms

AAAA

38ms

TXT

157ms

CAA

38ms

HTTPS

44ms

TLSA

941ms

SOA

34ms

MTA-STS

59ms

DNSSEC

78ms

SRV

86ms

Total

5988ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-13 11:47:21	5988ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 19:50:14	4111ms	2 NS 0 A 0 MX	⚠️ Bogus	View
2026-07-02 10:00:15	1377ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 15:10:05	852ms	0 NS 0 A 0 MX	⚠️ Bogus	View
2026-06-22 01:19:31	2723ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 05:30:09	1351ms	0 NS 0 A 0 MX	⚠️ Bogus	View
2026-06-16 23:10:47	2550ms	2 NS 1 A 1 MX	🔒 Secure	View