zerodc.dk

📜 Historical scan 2026-09-15 23:01:34 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

zerodc.dk is a .dk domain served by 5 nameservers (ns.gransy.com, ns2.gransy.com, ns3.gransy.com and 2 more). It was registered on 19 May 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.savana.cz, mx2.savana.cz. The zone is not DNSSEC-signed, 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#

5 records 74ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.gransy.com	2001:19f0:5001:1caf:5400:1ff:fec5:8d50 45.76.90.43 77.78.104.149 95.179.136.180	— 45.76.90.43.vultrusercontent.com ns.gransy.com 95.179.136.180.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS15685 CASABLANCA INT a.s. AS20473 The Constant Company, LLC
ns2.gransy.com	2001:19f0:6801:474:5400:1ff:fec5:8efb 2001:19f0:7401:81e0:5400:1ff:fec5:8ef6 217.16.185.221 217.69.4.49 95.179.192.121	— — ns2.gransy.com 217.69.4.49.vultrusercontent.com 95.179.192.121.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS43541 VSHosting s.r.o. AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
ns3.gransy.com	109.74.7.71 2a02:750:7::2e7 2a02:750:8::32 46.21.100.103 77.78.126.35	109-74-7-71-static.glesys.net 2a02-750-7--2e7-static.glesys.net 2a02-750-8--32-static.glesys.net 46-21-100-103-static.glesys.net —	AS42708 Glesys AB AS42708 Glesys AB AS42708 Glesys AB AS42708 Glesys AB AS15685 CASABLANCA INT a.s.
ns4.gransy.com	2001:19f0:5401:69b:5400:1ff:fec5:8f3f 2a00:1a28:2010:1::89 66.42.94.136 80.67.7.209	— 2a00-1a28-2010-1--89-static.glesys.net 66.42.94.136.vultrusercontent.com 80-67-7-209-static.glesys.net	AS20473 The Constant Company, LLC AS42708 Glesys AB AS20473 The Constant Company, LLC AS42708 Glesys AB
ns5.gransy.com	2a02:750:5::538 31.192.227.223	2a02-750-5--538-static.glesys.net 31-192-227-223-static.glesys.net	AS42708 Glesys AB AS42708 Glesys AB

🌍 A Records#

1 records 81ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
109.123.208.55	900s	ns.data.208.55.inkpanzee.com	AS204383	—	—	🇨🇿 Czechia	—

📧 MX Records#

2 records 77ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	900s	mx1.savana.cz	130.193.14.154	email.webglobe.cz	AS29134 Webglobe, s.r.o.
20	900s	mx2.savana.cz	185.102.21.80	email3.webglobe.cz	AS8648 dogado GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	zerodc.dk → 109.123.208.55
🔶 Autoconfig	zerodc.dk → 109.123.208.55

🔷 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 00:30:22

www CNAME	zerodc.dk (all on zerodc.dk) → 109.123.208.55 (AS204383)
www vs bare domain	Same network zerodc.dk: 109.123.208.55 (AS204383) www.zerodc.dk: 109.123.208.55 (AS204383)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 4 CDS, 0 CDNSKEY

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.zerodc.dk	zerodc.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9078ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2783514737
Primary NS (MNAME)	ns.gransy.com
Responsible (RNAME)	root@gransy.com
Refresh	86400s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-20 08:12:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-05-19
Expires	2027-05-31 (222d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

74ms

81ms

77ms

AAAA

95ms

TXT

743ms

CAA

93ms

HTTPS

129ms

TLSA

528ms

SOA

0ms

MTA-STS

166ms

DNSSEC

9078ms

SRV

1008ms

Total

10071ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 07:23:06	3319ms	5 NS 1 A 2 MX	🔓 Insecure
2026-09-15 23:01:34 shown	10071ms	5 NS 1 A 2 MX	🔓 Insecure
2026-07-28 21:16:43	14933ms	5 NS 1 A 2 MX	🔓 Insecure
2026-07-24 08:32:16	14918ms	5 NS 1 A 2 MX	🔓 Insecure
2026-07-09 03:09:37	10209ms	5 NS 1 A 2 MX	🔓 Insecure
2026-06-21 17:51:07	2511ms	5 NS 1 A 2 MX	🔓 Insecure
2026-06-20 23:01:37	1132ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 07:00:29	9630ms	5 NS 1 A 2 MX	🔓 Insecure