cityoptik.dk

📜 Historical scan 2026-06-16 21:06:38 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cityoptik.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 3 August 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.8.38.10 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, publishes a 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 195ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	—	—	—
ns2.simply.com	—	—	—
ns3.simply.com	—	—	—
ns4.simply.com	—	—	—

🌍 A Records#

1 records 288ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.8.38.10	—	—	AS48854	team.blue Denmark A/S	193.8.38.0/24	🇩🇰 Denmark	—

📧 MX Records#

2 records 221ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
10	—	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 3584ms

TXT Record
v=spf1 a include:spf.curanet.dk include:spf.simply.com -all

✉️ SPF#

Policy	Record (cityoptik.dk)
-all (hard fail)	v=spf1 a include:spf.curanet.dk include:spf.simply.com -all

📨 DMARC#

Policy	Record (_dmarc.cityoptik.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 2026-10-22 07:44:46

www	193.8.38.10 (AS48854) (address records, no CNAME)
www vs bare domain	Same network cityoptik.dk: 193.8.38.10 (AS48854) www.cityoptik.dk: 193.8.38.10 (AS48854)
Wildcard	No
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

3761ms

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

🏷️ SOA#

1053ms

Field	Value
Serial	2026042901
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 13:04:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2006-08-03
Expires	2027-08-31 (311d)

📋 WHOIS#

⏱️ Lookup Timing#

195ms

288ms

221ms

AAAA

1917ms

TXT

3584ms

CAA

415ms

HTTPS

339ms

TLSA

5922ms

SOA

1053ms

MTA-STS

1942ms

DNSSEC

3761ms

SRV

0ms

Total

46200ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 07:44:46	483ms	4 NS 1 A 2 MX	🔒 Secure
2026-10-07 23:23:51	335ms	4 NS 1 A 2 MX	🔒 Secure
2026-10-02 12:26:00	656ms	4 NS 1 A 2 MX	🔒 Secure
2026-09-24 11:30:45	472ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-27 00:22:25	1678ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-21 06:18:31	1740ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-19 13:08:40	1327ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-16 21:22:45	2543ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-16 21:06:38 shown	46200ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-16 21:01:13	506ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-16 21:00:25	1342ms	4 NS 1 A 2 MX	🔒 Secure