os2sync.dk

Records from scan: 2026-07-03 02:01:45 · 2525ms total · last checked 2026-10-19 01:19 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

os2sync.dk is a .dk domain served by 4 nameservers (ns-1206.awsdns-22.org, ns-1884.awsdns-43.co.uk, ns-410.awsdns-51.com and 1 more). It was registered on 27 November 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records 81ms

Nameserver	IP addresses	PTR	ASN / ISP
ns-1206.awsdns-22.org	205.251.196.182 2600:9000:5304:b600::1	ns-1206.awsdns-22.org ns-1206.awsdns-22.org	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-1884.awsdns-43.co.uk	205.251.199.92 2600:9000:5307:5c00::1	ns-1884.awsdns-43.co.uk ns-1884.awsdns-43.co.uk	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-410.awsdns-51.com	205.251.193.154 2600:9000:5301:9a00::1	ns-410.awsdns-51.com ns-410.awsdns-51.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
ns-821.awsdns-38.net	205.251.195.53 2600:9000:5303:3500::1	ns-821.awsdns-38.net ns-821.awsdns-38.net	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 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#

checked 2026-10-12 18:44:13

www CNAME	d1u32yu44l7ubg.cloudfront.net (all on cloudfront.net) → 18.173.5.106 18.173.5.112 18.173.5.117 18.173.5.3 2600:9000:2574:200:17:8b06:8f00:93a1 2600:9000:2574:2c00:17:8b06:8f00:93a1 2600:9000:2574:800:17:8b06:8f00:93a1 2600:9000:2574:8e00:17:8b06:8f00:93a1 (AS16509)
www vs bare domain	Only www resolves os2sync.dk: no address www.os2sync.dk: 18.173.5.106 18.173.5.112 18.173.5.117 18.173.5.3 (AS16509) (all like this)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2069ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

82ms

Field	Value
Serial	1
Primary NS (MNAME)	ns-1206.awsdns-22.org
Responsible (RNAME)	awsdns-hostmaster@amazon.com
Refresh	7200s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-13 09:34:13

Field	Value
Registrar	Simply.com A/S
Registered	2019-11-27
Expires	2026-11-30 (41d)

🔗 Same registrant#

6 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
internal-dns.dk	Simply.com A/S
os2compliance.dk	Simply.com A/S
os2faktor.dk	Simply.com A/S
os2fildeling.dk	Simply.com A/S
os2korrespondance.dk	Simply.com A/S
os2skoledata.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

81ms

67ms

101ms

AAAA

80ms

TXT

331ms

CAA

89ms

HTTPS

105ms

TLSA

47ms

SOA

82ms

MTA-STS

166ms

DNSSEC

2069ms

SRV

117ms

Total

2525ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-07-03 02:01:45 shown	2525ms	4 NS 0 A 0 MX	🔓 Insecure
2026-06-28 02:01:35	691ms	4 NS 0 A 0 MX	🔓 Insecure
2026-06-18 23:51:55	917ms	4 NS 0 A 0 MX	🔓 Insecure
2026-06-17 11:36:31	909ms	4 NS 0 A 0 MX	🔓 Insecure