instant.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 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.198.138.32	3600s	—	AS51167	Contabo GmbH	91.198.138.0/24	🇫🇷 France	Lauterbourg

📧 MX Records1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	instant-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::20 2a01:111:f403:ca09::24 2a01:111:f403:ca38::8 52.101.103.36 52.101.181.153 52.101.68.25 52.101.73.4	mail-du2pr03cu00102.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db8pr02cu00101.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 72ms

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

📝 TXT Records2 records 203ms

TXT Record
MS=ms19795761
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (instant.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)

🔐 DNSSEC87ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081201
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

48ms

MX

43ms

AAAA

39ms

TXT

203ms

CAA

50ms

HTTPS

65ms

TLSA

371ms

SOA

0ms

MTA-STS

55ms

DNSSEC

87ms

SRV

72ms

Total

1005ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 21:55:36	1005ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-13 22:27:07	6742ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-21 04:11:38	5214ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-19 11:02:26	2132ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 22:34:54	1242ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-07 01:26:53	34064ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 14:58:38	1010ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 11:19:29	1357ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 07:30:39	910ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 19:18:47	1333ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 20:39:03	1035ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 10:55:14	1206ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-17 20:17:55	790ms	2 NS 1 A 1 MX	🔒 Secure	View