yubikey.dk

📜 Historical scan 2026-06-18 00:27:29 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

yubikey.dk is a .dk domain served by 4 nameservers (ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com and 1 more). It was registered on 27 April 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.190.17.235 is hosted by Google LLC (AS396982) in United States. 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#

4 records 66ms

Nameserver	IP addresses	PTR	ASN / ISP
ns-cloud-a1.googledomains.com	2001:4860:4802:32::6a 216.239.32.106	ns-cloud-a1.googledomains.com ns-cloud-a1.googledomains.com	AS15169 Google LLC AS15169 Google LLC
ns-cloud-a2.googledomains.com	2001:4860:4802:34::6a 216.239.34.106	ns-cloud-a2.googledomains.com ns-cloud-a2.googledomains.com	AS15169 Google LLC AS15169 Google LLC
ns-cloud-a3.googledomains.com	2001:4860:4802:36::6a 216.239.36.106	ns-cloud-a3.googledomains.com ns-cloud-a3.googledomains.com	AS15169 Google LLC AS15169 Google LLC
ns-cloud-a4.googledomains.com	2001:4860:4802:38::6a 216.239.38.106	ns-cloud-a4.googledomains.com ns-cloud-a4.googledomains.com	AS15169 Google LLC AS15169 Google LLC

🌍 A Records#

1 records 58ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
35.190.17.235	—	235.17.190.35.bc.googleusercontent.com	AS396982	Google LLC	35.184.0.0/13	🇺🇸 United States	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

1 records 71ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2600:1901:0:e733::	—	—	AS396982	Google LLC	2600:1900:0:0:0:0:0:0/31	🇺🇸 United States	Kansas City

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 634ms

TXT Record
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.yubikey.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc-rua@yubico.com

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

3 records 76ms

Flags	Tag	Value
0	iodef	mailto:tlsadmin@yubico.com
0	issue	letsencrypt.org
0	issue	pki.goog

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 05:07:16

www	35.190.17.235 2600:1901:0:e733:: (AS396982) (address records, no CNAME)
www vs bare domain	Same network yubikey.dk: 35.190.17.235 2600:1901:0:e733:: (AS396982) www.yubikey.dk: 35.190.17.235 2600:1901:0:e733:: (AS396982)
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#

91ms

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

🏷️ SOA#

62ms

Field	Value
Serial	1
Primary NS (MNAME)	ns-cloud-a1.googledomains.com
Responsible (RNAME)	cloud-dns-hostmaster@google.com
Refresh	21600s
Retry	3600s
Expire	259200s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-07 18:41:10

Field	Value
Registrar	MarkMonitor Inc.
Registered	2017-04-27
Expires	2027-04-30 (190d)

📋 WHOIS#

⏱️ Lookup Timing#

66ms

58ms

59ms

AAAA

71ms

TXT

634ms

CAA

76ms

HTTPS

91ms

TLSA

108ms

SOA

62ms

MTA-STS

63ms

DNSSEC

91ms

SRV

89ms

Total

1101ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 05:07:16	769ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-23 20:06:22	925ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-22 17:46:12	1568ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-21 15:33:37	955ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 00:27:29 shown	1101ms	4 NS 1 A 0 MX	🔓 Insecure