openscreen.dk
📜 Historical scan 2026-06-27 17:30:15  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   326ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10 ns01.one.com AS197495 One.com A/S
ns02.one.com — — —
🌍 A Records1 records   332ms
IPTTLPTRASNISP / OrgCIDRCountryCity
192.38.84.65 43200s redirector.ait.dtu.dk AS1835 IDDQD-AS 192.38.0.0/17 🇩🇰 Denmark Kongens Lyngby
📧 MX Records3 records   222ms
PriorityTTLMail ServerIP addressesPTRASN
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
puertomarket.tempurl.host		 AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
10 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
puertomarket.tempurl.host		 AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
20 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
puertomarket.tempurl.host		 AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverredirector.ait.dtu.dk → 192.38.84.65
🔶 Autoconfigredirector.ait.dtu.dk → 192.38.84.65
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records
📝
No TXT records found
✉️ SPF
✗ No SPF record — mail spoofing not restricted
📨 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.openscreen.dk redirector.ait.dtu.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC327ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA224ms
FieldValue
Serial2026041201
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
326ms
A
332ms
MX
222ms
AAAA
228ms
TXT
516ms
CAA
220ms
HTTPS
205ms
TLSA
252ms
SOA
224ms
MTA-STS
289ms
DNSSEC
327ms
SRV
324ms
Total
2604ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 15:46:18 1206ms 2 NS 1 A 3 MX 🔒 Secure View
2026-08-26 00:00:25 1341ms 2 NS 1 A 3 MX 🔒 Secure View
2026-06-27 17:30:15 2604ms 2 NS 1 A 3 MX 🔒 Secure View
2026-06-17 13:06:42 809ms 2 NS 1 A 3 MX 🔒 Secure View
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