4plus4.dk DNS records

🖥️ Nameservers2 records 92ms

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 96ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.152	3600s	webcluster1.webpod17-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 78ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	4plus4-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::c 2a01:111:f403:ca09::2 2a01:111:f403:ca48::c 52.101.103.137 52.101.68.18 52.101.68.25 52.101.73.126	mail-db7pr03cu00601.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am8pr83cu00106.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)1 records 100ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:106:c5:9fc8:d32d:b724	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 411ms

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

✉️ SPF

Policy	Record (4plus4.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)

🔐 DNSSEC283ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082901
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

92ms

A

96ms

MX

78ms

AAAA

100ms

TXT

411ms

CAA

102ms

HTTPS

102ms

TLSA

452ms

SOA

0ms

MTA-STS

137ms

DNSSEC

283ms

SRV

166ms

Total

2294ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 20:56:53	2294ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 16:18:08	1543ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-09 12:26:59	6163ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-02 08:24:38	6023ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-24 21:06:18	1404ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-23 19:13:41	5326ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-19 10:41:35	6608ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-14 15:49:28	5066ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 04:04:47	1877ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 12:51:21	1666ms	2 NS 1 A 1 MX	🔒 Secure	View