penfor.dk DNS records

🖥️ Nameservers2 records 42ms

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
185.21.40.175	600s	vm1484.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records2 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	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
10	600s	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 → 52.98.149.136

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 266ms

TXT Record
MS=ms32378486
v=spf1 include:spf-esec.heimdalsecurity.com include:web.shared.mysmtp.com include:spf.protection.outlook.com include:spf.curanet.dk -all

✉️ SPF

Policy	Record (penfor.dk)
-all (hard fail)	v=spf1 include:spf-esec.heimdalsecurity.com include:web.shared.mysmtp.com include:spf.protection.outlook.com include:spf.curanet.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 / DANE2 records 76ms

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…

🔐 DNSSEC83ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080801
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

42ms

A

48ms

MX

37ms

AAAA

53ms

TXT

266ms

CAA

43ms

HTTPS

44ms

TLSA

76ms

SOA

0ms

MTA-STS

229ms

DNSSEC

83ms

SRV

67ms

Total

928ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 13:30:37	928ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-09 17:02:07	1226ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-29 00:21:50	4870ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-10 15:28:56	8938ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-27 22:19:37	712ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-26 06:45:26	1879ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 21:20:12	1395ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 13:45:28	2245ms	2 NS 1 A 2 MX	🔒 Secure	View