alcon.dk

📜 Historical scan 2026-06-16 12:39:15 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

alcon.dk is a .dk domain served by 4 nameservers (ha1.markmonitor.zone, ha2.markmonitor.zone, ha3.markmonitor.zone and 1 more). It was registered on 16 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.18.0.244 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, 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 51ms

Nameserver	IP addresses	PTR	ASN / ISP
ha1.markmonitor.zone	—	—	—
ha2.markmonitor.zone	—	—	—
ha3.markmonitor.zone	—	—	—
ha4.markmonitor.zone	—	—	—

🌍 A Records#

2 records 49ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.18.0.244	—	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—
104.18.1.244	—	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—

📧 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#

2 records 146ms

TXT Record
8e36e5a410774de2ba6266aa7aeba911
v=spf1 -all

✉️ SPF#

Policy	Record (alcon.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.alcon.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:f762a5e1e929449@rep.dmarcanalyzer.com; ruf=mailto:f762a5e1e929449@for.dmarcanalyzer.com; fo=1;

📬 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 2026-10-07 16:24:11

www CNAME	www.alcon.dk.cdn.cloudflare.net (all on cloudflare.net) → 104.18.8.76 104.18.9.76 2606:4700::6812:84c 2606:4700::6812:94c (AS13335)
www vs bare domain	Same network alcon.dk: 104.18.0.244 104.18.1.244 (AS13335) www.alcon.dk: 104.18.8.76 104.18.9.76 2606:4700::6812:84c 2606:4700::6812:94c (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

120ms

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

🏷️ SOA#

41ms

Field	Value
Serial	2026041601
Primary NS (MNAME)	ha1.markmonitor.zone
Responsible (RNAME)	hostmaster@markmonitor.com
Refresh	3600s
Retry	600s
Expire	604800s
Minimum (neg-cache TTL)	172800s

📋 Registration#

WHOIS fetched 2026-10-07 16:45:56

Field	Value
Registrar	MarkMonitor Inc.
Registered	1998-02-16
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

51ms

49ms

51ms

AAAA

43ms

TXT

146ms

CAA

46ms

HTTPS

45ms

TLSA

59ms

SOA

41ms

MTA-STS

83ms

DNSSEC

120ms

SRV

0ms

Total

461ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 16:24:11	2268ms	4 NS 2 A 0 MX	🔓 Insecure
2026-09-30 12:53:19	784ms	4 NS 2 A 0 MX	🔓 Insecure
2026-09-25 07:13:08	2357ms	4 NS 2 A 0 MX	🔓 Insecure
2026-08-20 03:02:49	9956ms	4 NS 2 A 0 MX	🔓 Insecure
2026-06-30 02:04:52	766ms	4 NS 2 A 0 MX	🔓 Insecure
2026-06-25 06:19:07	999ms	4 NS 2 A 0 MX	🔓 Insecure
2026-06-23 19:06:39	1145ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 12:24:54	2635ms	4 NS 2 A 0 MX	🔓 Insecure
2026-06-16 12:39:15 shown	461ms	4 NS 2 A 0 MX	🔓 Insecure