kolon.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 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
76.76.21.21	43200s	—	AS16509	Amazon.com, Inc.	76.76.21.0/24	🇺🇸 United States	Walnut

📧 MX Records1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	kolon-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::10 2a01:111:f403:ca04::4 2a01:111:f403:ca09::5 52.101.68.3 52.101.68.8 52.101.73.1 52.101.73.28	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am7pr05cu00204.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
🔶 Autoconfig	kolon.dk → 76.76.21.21

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 179ms

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

📝 TXT Records2 records 215ms

TXT Record
MS=ms43217290
v=spf1 ip4:62.116.200.20 include:spf.protection.outlook.com include:authsmtp.com -all

✉️ SPF

Policy	Record (kolon.dk)
-all (hard fail)	v=spf1 ip4:62.116.200.20 include:spf.protection.outlook.com include:authsmtp.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.kolon.dk	kolon.dk

🔗 TLSA / DANE

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

🔐 DNSSEC69ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082201
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 RegistrationWHOIS fetched 2026-07-24 02:51:30

Field	Value
Registrar	Simply.com A/S
Registered	1997-02-28
Expires	2027-03-31 (205d)

📋 WHOIS

⏱️ Lookup Timing

NS

37ms

A

47ms

MX

49ms

AAAA

42ms

TXT

215ms

CAA

36ms

HTTPS

40ms

TLSA

820ms

SOA

0ms

MTA-STS

72ms

DNSSEC

69ms

SRV

179ms

Total

2008ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-23 08:45:11	2008ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-24 02:50:33	3663ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-19 16:52:55	2048ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 18:31:12	6430ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 18:00:58	1001ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 08:57:04	917ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 07:15:21	3036ms	2 NS 1 A 1 MX	🔒 Secure	View