horstmann.dk DNS records

🖥️ Nameservers2 records 27ms

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 27ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.185	3600s	webcluster2.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records2 records 27ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	horstmann-dk.mx1.comendosystems.com	192.162.219.255 2a01:77c0:1619:4102:a81b:80d0:e56c:edc0	mx41.electric.net gw2-1535.security.comendo.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
20	3600s	horstmann-dk.mx2.comendosystems.net	192.162.219.155	mx41.electric.net	AS16509 Amazon.com, Inc.

🔷 AAAA Records (IPv6)1 records 31ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:80ce:29b1:afad:6d07	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 114ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.comendosystems.com include:_spf-hosting.eg.dk ip4:46.30.212.7 -all

✉️ SPF

Policy	Record (horstmann.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.comendosystems.com include:_spf-hosting.eg.dk ip4:46.30.212.7 -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)

🔐 DNSSEC98ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082601
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

27ms

A

27ms

MX

27ms

AAAA

31ms

TXT

114ms

CAA

31ms

HTTPS

31ms

TLSA

194ms

SOA

0ms

MTA-STS

50ms

DNSSEC

98ms

SRV

37ms

Total

839ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 15:40:39	839ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-18 12:36:16	2483ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-27 06:27:38	1481ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-26 09:46:24	731ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 12:10:52	3231ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 01:58:07	1434ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-24 20:07:27	815ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-21 09:01:32	1170ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 20:12:12	1971ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-18 16:54:59	734ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 13:34:08	269ms	0 NS 0 A 0 MX	❓ Unknown	View