zerodc.dk DNS records

🖥️ Nameservers5 records 104ms

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 Records1 records 66ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
109.123.208.55	900s	ns.data.208.55.inkpanzee.com	AS204383	SPCom s.r.o.	109.123.208.0/23	🇨🇿 Czechia	—

📧 MX Records2 records 73ms

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

🔏 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)

🔐 DNSSEC9066ms

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

🏷️ SOA24ms

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

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

104ms

A

66ms

MX

73ms

AAAA

173ms

TXT

690ms

CAA

124ms

HTTPS

126ms

TLSA

541ms

SOA

24ms

MTA-STS

156ms

DNSSEC

9066ms

SRV

394ms

Total

14933ms

🕐 Scan History

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