openscreen.dk

📜 Historical scan 2026-10-06 11:13:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

openscreen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 11 January 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 192.38.84.65 is hosted by IDDQD-AS (AS1835) in Denmark. Mail is handled by mx1.spamfilter.cc, mx2.spamfilter.cc and 1 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 34ms

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 Records#

1 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
192.38.84.65	43200s	redirector.ait.dtu.dk	AS1835	IDDQD-AS	192.38.0.0/17	🇩🇰 Denmark	Kongens Lyngby

📧 MX Records#

3 records 29ms

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
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 95.179.218.56.vultrusercontent.com	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 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	redirector.ait.dtu.dk → 192.38.84.65
🔶 Autoconfig	redirector.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 07:21:31

www CNAME	redirector.ait.dtu.dk (all on dtu.dk) → 192.38.84.65 (AS1835)
www vs bare domain	Same network openscreen.dk: 192.38.84.65 (AS1835) www.openscreen.dk: 192.38.84.65 (AS1835)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.openscreen.dk	redirector.ait.dtu.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

55ms

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

🏷️ SOA#

33ms

Field	Value
Serial	2026100501
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-10 07:56:57

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-01-11
Expires	2027-01-31 (106d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

33ms

29ms

AAAA

33ms

TXT

133ms

CAA

35ms

HTTPS

40ms

TLSA

94ms

SOA

33ms

MTA-STS

63ms

DNSSEC

55ms

SRV

62ms

Total

1129ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 07:21:31	2309ms	2 NS 1 A 3 MX	🔒 Secure
2026-10-06 11:13:46 shown	1129ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-30 10:41:25	945ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-26 04:47:27	1232ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-03 09:35:38	3276ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-26 15:46:18	1206ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-26 00:00:25	1341ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-27 17:30:15	2604ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 13:06:42	809ms	2 NS 1 A 3 MX	🔒 Secure