dfi-geisler.dk DNS records

🖥️ Nameservers2 records 47ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnshost.net	2a0b:8e00::10 91.237.67.1	ns1.dnshost.net ns1.dnshost.net	AS1921 ipcom GmbH AS1921 ipcom GmbH
ns2.dnshost.net	185.167.176.1 2a0b:8e00:1::10	ns2.dnshost.net ns2.dnshost.net	AS207021 ipcom GmbH AS207021 ipcom GmbH

🌍 A Records1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.157.223.250	120s	redirects.domainname.systems	AS42708	Glesys AB	185.157.220.0/22	🇸🇪 Sweden	Falkenberg

📧 MX Records2 records 50ms

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
10	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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 233ms

TXT Record
MS=ms42151837
v=spf1 mx mx:exc.dfi-as.dk mx:mail.dfi-geisler.dk include:spf.protection.outlook.com include:spf-esec.heimdalsecurity.com -all

✉️ SPF

Policy	Record (dfi-geisler.dk)
-all (hard fail)	v=spf1 mx mx:exc.dfi-as.dk mx:mail.dfi-geisler.dk 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 62ms

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…

🔐 DNSSEC78ms

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

🏷️ SOA0ms

Field	Value
Serial	1749129867
Primary NS (MNAME)	ns1.dnshost.net
Responsible (RNAME)	zonemaster\@dnshost@net
Refresh	43200s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

47ms

A

52ms

MX

50ms

AAAA

49ms

TXT

233ms

CAA

53ms

HTTPS

50ms

TLSA

62ms

SOA

0ms

MTA-STS

81ms

DNSSEC

78ms

SRV

72ms

Total

807ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 18:51:19	807ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-25 17:56:00	968ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-20 12:03:15	1099ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-13 23:25:54	10197ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-09 06:52:40	1476ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-02 03:33:58	1345ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-23 23:03:20	981ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-16 20:28:49	1034ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-09 14:00:40	9226ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-03 19:07:33	5432ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-27 05:58:39	806ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-26 00:45:20	854ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-20 19:59:07	650ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 02:35:48	766ms	2 NS 1 A 2 MX	🔒 Secure	View