colt.dk DNS records

🖥️ Nameservers2 records 203ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.coltgroup.info	134.0.30.178 2a03:2900:3:1::2	ns1.routing.net ns1.routing.net	AS48823 Hosting.de GmbH AS48823 Hosting.de GmbH
ns2.coltgroup.info	194.50.113.2 2001:4d8f:2::2	ns2.routing.net ns2.routing.net	AS41637 Hosting.de GmbH AS41637 Hosting.de GmbH

🌍 A Records1 records 199ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
151.106.71.76	86400s	ma5012788.psmanaged.com	AS61157	PlusServer GmbH	151.106.64.0/20	🇩🇪 Germany	—

📧 MX Records1 records 270ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	86400s	colt-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::9 2a01:111:f403:ca09::2 2a01:111:f403:ca09::e 52.101.73.11 52.101.73.153 52.101.73.22 52.101.73.4	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am0pr83cu00404.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 Records1 records 784ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 1397ms

TXT Record
MS=ms73484842
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

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

🔐 DNSSEC421ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA179ms

Field	Value
Serial	2025012800
Primary NS (MNAME)	ns1.coltgroup.info
Responsible (RNAME)	hostmaster@colt.dk
Refresh	86400s
Retry	7200s
Expire	3600000s
Minimum (neg-cache TTL)	900s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

203ms

A

199ms

MX

270ms

AAAA

225ms

TXT

1397ms

CAA

184ms

HTTPS

217ms

TLSA

849ms

SOA

179ms

MTA-STS

264ms

DNSSEC

421ms

SRV

784ms

Total

3592ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-28 11:50:44	3592ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-27 20:08:05	2640ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 14:54:31	1826ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-22 14:31:30	1900ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-22 11:22:46	914ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 21:50:25	1074ms	2 NS 1 A 1 MX	🔓 Insecure	View