cero2.dk

📜 Historical scan 2026-06-19 01:44:19 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cero2.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 30 May 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.20.205.69 is hosted by team.blue Denmark A/S (AS48854) in Denmark. 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#

4 records 43ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.20.205.69	3600s	linux393.unoeuro.com	AS48854	team.blue Denmark A/S	185.20.204.0/22	🇩🇰 Denmark	—

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	185.20.205.69
🔶 Autoconfig	185.20.205.69

🔷 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 2026-10-13 06:57:34

www	185.20.205.69 (AS48854) (address records, no CNAME)
www vs bare domain	Same network cero2.dk: 185.20.205.69 (AS48854) www.cero2.dk: 185.20.205.69 (AS48854)
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) 1 CDS, 1 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

127ms

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

🏷️ SOA#

41ms

Field	Value
Serial	2025022400
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-02 21:37:20

Field	Value
Registrar	Simply.com A/S
Registered	2019-05-30
Expires	2027-05-31 (225d)

📋 WHOIS#

⏱️ Lookup Timing#

43ms

44ms

83ms

AAAA

62ms

TXT

178ms

CAA

82ms

HTTPS

77ms

TLSA

54ms

SOA

41ms

MTA-STS

64ms

DNSSEC

127ms

SRV

140ms

Total

586ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 21:21:57	361ms	4 NS 1 A 0 MX	🔒 Secure
2026-09-26 20:47:57	590ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-23 18:27:28	3181ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-22 08:01:18	1174ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 01:44:19 shown	586ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 20:10:45	448ms	4 NS 1 A 0 MX	🔒 Secure