flashcards.dk

📜 Historical scan 2026-08-27 16:46:31 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

flashcards.dk is a .dk domain served by 2 nameservers (hank.ns.cloudflare.com, heather.ns.cloudflare.com). It was registered on 26 April 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.55.114 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, publishes a 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 30ms

Nameserver	IP addresses	PTR	ASN / ISP
hank.ns.cloudflare.com	108.162.193.116 172.64.33.116 173.245.59.116 2606:4700:58::adf5:3b74 2803:f800:50::6ca2:c174 2a06:98c1:50::ac40:2174	hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
heather.ns.cloudflare.com	108.162.192.161 172.64.32.161 173.245.58.161 2606:4700:50::adf5:3aa1 2803:f800:50::6ca2:c0a1 2a06:98c1:50::ac40:20a1	heather.ns.cloudflare.com heather.ns.cloudflare.com heather.ns.cloudflare.com heather.ns.cloudflare.com heather.ns.cloudflare.com heather.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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.55.114	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.171.32	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 26ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:3772	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:ab20	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 29ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=104.21.55.114,172.67.171.32 ech=AEX+DQBBvAAgACAjBvVHkFpqArpRl920aDwCdfppSK52abJazKltW9VlRAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:3772,2606:4700:3034::ac43:ab20

📝 TXT Records#

1 records 137ms

TXT Record
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.flashcards.dk)
p=reject	v=DMARC1; p=reject;

📬 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 2026-10-11 10:11:38

www	104.21.55.114 172.67.171.32 2606:4700:3030::6815:3772 2606:4700:3034::ac43:ab20 (AS13335) (address records, no CNAME)
www vs bare domain	Same network flashcards.dk: 104.21.55.114 172.67.171.32 2606:4700:3030::6815:3772 2606:4700:3034::ac43:ab20 (AS13335) www.flashcards.dk: 104.21.55.114 172.67.171.32 2606:4700:3030::6815:3772 2606:4700:3034::ac43:ab20 (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#

104ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413288176
Primary NS (MNAME)	hank.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 05:50:43

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-04-26
Expires	2028-04-30 (553d)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

32ms

28ms

AAAA

26ms

TXT

137ms

CAA

28ms

HTTPS

29ms

TLSA

47ms

SOA

0ms

MTA-STS

46ms

DNSSEC

104ms

SRV

40ms

Total

506ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 20:48:08	508ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-27 13:29:16	602ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-26 13:23:27	522ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-27 16:46:31 shown	506ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-01 03:59:49	835ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-29 11:37:14	840ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-23 11:06:51	821ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-17 09:21:44	724ms	2 NS 2 A 0 MX	🔓 Insecure