zebu.dk DNS records

🖥️ Nameservers2 records 39ms

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 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
127.0.0.1	900s	localhost	—	—	—	—	—

📧 MX Records1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	900s	zebu-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::d 2a01:111:f403:ca09::24 2a01:111:f403:ca09::26 52.101.68.3 52.101.73.1 52.101.73.153 52.101.73.16	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-as2pr05cu00100.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)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 128ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.mentor-it.dk -all

✉️ SPF

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

🔐 DNSSEC109ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082501
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

39ms

A

37ms

MX

35ms

AAAA

40ms

TXT

128ms

CAA

40ms

HTTPS

48ms

TLSA

228ms

SOA

0ms

MTA-STS

56ms

DNSSEC

109ms

SRV

74ms

Total

751ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 13:56:06	751ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-25 22:34:23	9220ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-30 01:47:21	811ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 23:36:50	617ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 21:10:14	1035ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-17 11:37:38	1445ms	2 NS 1 A 1 MX	🔒 Secure	View