fsociety.dk

📜 Historical scan 2026-10-16 04:45:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fsociety.dk is a .dk domain served by 2 nameservers (cecelia.ns.cloudflare.com, jonah.ns.cloudflare.com). It was registered on 15 April 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.17.91 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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#

2 records 108ms

Nameserver	IP addresses	PTR	ASN / ISP
cecelia.ns.cloudflare.com	108.162.194.135 162.159.38.135 172.64.34.135 2606:4700:50::a29f:2687 2803:f800:50::6ca2:c287 2a06:98c1:50::ac40:2287	cecelia.ns.cloudflare.com cecelia.ns.cloudflare.com cecelia.ns.cloudflare.com cecelia.ns.cloudflare.com cecelia.ns.cloudflare.com cecelia.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jonah.ns.cloudflare.com	108.162.193.186 172.64.33.186 173.245.59.186 2606:4700:58::adf5:3bba 2803:f800:50::6ca2:c1ba 2a06:98c1:50::ac40:21ba	jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 106ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.17.91	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.175.105	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 130ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:af69	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:115b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 123ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.17.91,172.67.175.105 ech=AEX+DQBBnQAgACCMPwA5JysGqGnr3N3dIq7P8Zr8Tp3/o3rhlD4v8wXVFgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:af69,2606:4700:3037::6815:115b

📝 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 2026-10-22 01:40:46

www	104.21.17.91 172.67.175.105 2606:4700:3030::ac43:af69 2606:4700:3037::6815:115b (AS13335) (address records, no CNAME)
www vs bare domain	Same network fsociety.dk: 104.21.17.91 172.67.175.105 2606:4700:3030::ac43:af69 2606:4700:3037::6815:115b (AS13335) www.fsociety.dk: 104.21.17.91 172.67.175.105 2606:4700:3030::ac43:af69 2606:4700:3037::6815:115b (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
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#

231ms

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

🏷️ SOA#

24ms

Field	Value
Serial	2415398092
Primary NS (MNAME)	cecelia.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-17 06:34:18

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-04-15
Expires	2027-04-30 (188d)

📋 WHOIS#

⏱️ Lookup Timing#

108ms

106ms

138ms

AAAA

130ms

TXT

234ms

CAA

139ms

HTTPS

123ms

TLSA

569ms

SOA

24ms

MTA-STS

143ms

DNSSEC

231ms

SRV

141ms

Total

1972ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 01:40:46	500ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-17 06:21:18	2229ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-16 04:45:33 shown	1972ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-15 02:52:51	2503ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-22 00:27:15	854ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-06 15:47:20	1523ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-27 18:15:58	483ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-24 12:58:57	8940ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-21 10:39:05	13231ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-08 04:46:08	1194ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-13 03:14:47	943ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-06 10:31:47	1549ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-02 00:00:00	881ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-17 09:48:17	501ms	2 NS 2 A 0 MX	🔒 Secure