ribu.dk DNS records

🖥️ Nameservers2 records 68ms

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 97ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.8.37.82	43200s	—	AS3308	Norlys Telco A/S	193.8.36.0/23	🇩🇰 Denmark	Ølstykke

📧 MX Records2 records 90ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	eu-esec-01.heimdalsecurity.com	20.50.183.144 20.50.183.146	eu-esec-01.heimdalsecurity.com eu-esec-01.heimdalsecurity.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
20	3600s	eu-esec-02.heimdalsecurity.com	20.50.183.144 20.50.183.146	eu-esec-01.heimdalsecurity.com eu-esec-01.heimdalsecurity.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 174ms

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

📝 TXT Records2 records 285ms

TXT Record
anthropic-domain-verification-9d6sgg=6hzMoktY4DTRpL2pVaP1IrJJh
v=spf1 include:spf.protection.outlook.com include:spf-esec.heimdalsecurity.com -all

✉️ SPF

Policy	Record (ribu.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf-esec.heimdalsecurity.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 / DANE2 records 425ms

Service / Owner	Type	Cert association
SMTP _25._tcp.eu-esec-01.heimdalsecurity.com	DANE-EE · SPKI · SHA-256	2E8933DD6DB99304A5A9D5C4ECDE7B8E…
SMTP _25._tcp.eu-esec-02.heimdalsecurity.com	DANE-EE · SPKI · SHA-256	2E8933DD6DB99304A5A9D5C4ECDE7B8E…

🔐 DNSSEC261ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082801
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

68ms

A

97ms

MX

90ms

AAAA

96ms

TXT

285ms

CAA

74ms

HTTPS

111ms

TLSA

425ms

SOA

0ms

MTA-STS

208ms

DNSSEC

261ms

SRV

174ms

Total

1776ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 21:36:13	1776ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-26 20:01:38	848ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-19 17:27:31	5213ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-10 05:01:34	4926ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-11 08:26:54	870ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-28 22:52:52	688ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-28 08:12:38	704ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 16:42:59	1863ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 12:16:58	1196ms	2 NS 1 A 2 MX	🔒 Secure	View