skalstrup.dk DNS records

🖥️ Nameservers2 records 49ms

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 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.221.196.224	3600s	—	AS51468	One.com A/S	91.221.196.0/23	🇩🇰 Denmark	Copenhagen

📧 MX Records3 records 74ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	mx1.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com 95.179.218.56.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
20	43200s	mx2.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com 95.179.218.56.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
30	43200s	mx3.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com 95.179.218.56.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	91.221.196.224
🔶 Autoconfig	91.221.196.224

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 223ms

TXT Record
v=spf1 include:_include.mxhotel.dk -all

✉️ SPF

Policy	Record (skalstrup.dk)
-all (hard fail)	v=spf1 include:_include.mxhotel.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)

🔐 DNSSEC132ms

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

🏷️ SOA0ms

Field	Value
Serial	2026030501
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

49ms

A

51ms

MX

74ms

AAAA

50ms

TXT

223ms

CAA

32ms

HTTPS

62ms

TLSA

79ms

SOA

0ms

MTA-STS

121ms

DNSSEC

132ms

SRV

105ms

Total

848ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 19:41:46	848ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-30 08:10:43	878ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-26 01:43:55	854ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-23 01:44:14	1102ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-22 23:51:21	994ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-22 08:36:47	4379ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-22 04:59:55	942ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 10:12:00	1156ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 13:08:08	1981ms	2 NS 1 A 3 MX	🔒 Secure	View