rustbook.dk DNS records

🖥️ Nameservers3 records 43ms

Nameserver	IP addresses	PTR	ASN / ISP
ns4.hostonline.dk	217.195.185.243 2a02:188:6004:14::10	ns4.hostonline.dk ns4.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns5.hostonline.dk	217.195.185.244 2a02:188:6004:14::11	ns5.hostonline.dk ns5.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns6.hostonline.dk	85.191.126.85	ns6.hostonline.dk	AS204274 AURA Fiber A/S

🌍 A Records1 records 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
217.195.185.220	3600s	webhotel12.hostonline.dk	AS31027	GlobalConnect A/S	217.195.176.0/20	🇩🇰 Denmark	Copenhagen

📧 MX Records2 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	he.hostonline.dk	217.195.185.200 2a02:188:164::100	he.hostonline.dk he.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
30	43200s	mx-backup.hostonline.dk	217.195.185.201 2a02:188:6004:15::12	mx-backup.hostonline.dk spamfront2.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscoverredirect.hostonline.dk → 217.195.185.209

🔷 AAAA Records (IPv6)1 records 34ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:188:6004:10::28	3600s	webhotel12.hostonline.dk	AS31027	GlobalConnect A/S	2a02:188:0:0:0:0:0:0/30	🇩🇰 Denmark	—

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 145ms

TXT Record
v=spf1 a mx include:_spf.hostonline.dk -all

✉️ SPF

Policy	Record (rustbook.dk)
-all (hard fail)	v=spf1 a mx include:_spf.hostonline.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 / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC50ms

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

🏷️ SOA39ms

Field	Value
Serial	2026062702
Primary NS (MNAME)	ns4.hostonline.dk
Responsible (RNAME)	hostmaster@hostonline.dk
Refresh	86400s
Retry	7200s
Expire	3600000s
Minimum (neg-cache TTL)	172800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

43ms

A

40ms

MX

38ms

AAAA

34ms

TXT

145ms

CAA

31ms

HTTPS

31ms

TLSA

61ms

SOA

39ms

MTA-STS

36ms

DNSSEC

50ms

SRV

39ms

Total

637ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 09:38:13	2895ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-08-26 15:15:36	1972ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-08-21 16:11:24	5242ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-08-18 08:05:47	10046ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-08-11 11:40:46	2960ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-08-07 01:52:11	1005ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-07-27 06:19:27	2777ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-07-23 03:31:51	1629ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-07-17 20:20:53	952ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-07-08 17:14:59	16974ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-07-02 22:13:00	3320ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-29 22:53:39	637ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-29 20:49:48	1636ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 11:21:11	2872ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-19 22:37:11	607ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 15:09:07	877ms	3 NS 1 A 2 MX	❓ Unknown	View