yubikey.dk

📜 Historical scan 2026-06-23 20:06:22  ·  ← 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. Mail is handled by .. 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   50ms
NameserverIP addressesPTRASN / 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   50ms
IPTTLPTRASNISP / OrgCIDRCountryCity
35.190.17.235 10800s 235.17.190.35.bc.googleusercontent.com AS396982 Google LLC 35.184.0.0/13 🇺🇸 United States —

📧 MX Records#

1 records   79ms
PriorityTTLMail ServerIP addressesPTRASN
0 10800s .  Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

1 records   49ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2600:1901:0:e733:: 10800s — 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   351ms
TXT Record
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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   60ms
FlagsTagValue
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
www35.190.17.235 2600:1901:0:e733:: (AS396982) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.yubikey.dk c5f68905-5bfa-4efa-ba46-0c1d8f042eb8.13.authorize.certificatemanager.goog

🔗 TLSA / DANE#

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

🔐 DNSSEC#

134ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

67ms
FieldValue
Serial1
Primary NS (MNAME)ns-cloud-a1.googledomains.com
Responsible (RNAME)cloud-dns-hostmaster@google.com
Refresh21600s
Retry3600s
Expire259200s
Minimum (neg-cache TTL)300s

📋 Registration#

WHOIS fetched 2026-10-07 18:41:10
FieldValue
RegistrarMarkMonitor Inc.
Registered2017-04-27
Expires2027-04-30 (188d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
50ms
A
50ms
MX
79ms
AAAA
49ms
TXT
351ms
CAA
60ms
HTTPS
94ms
TLSA
73ms
SOA
67ms
MTA-STS
88ms
DNSSEC
134ms
SRV
100ms
Total
925ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-08 05:07:16 769ms 4 NS 1 A 1 MX 🔓 Insecure
2026-06-23 20:06:22 shown 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 1101ms 4 NS 1 A 0 MX 🔓 Insecure
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