yubikey.dk

📜 Historical scan 2026-06-22 17:46:12  ·  ← 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   49ms
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   52ms
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   51ms
PriorityTTLMail ServerIP addressesPTRASN
0 10800s .  Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

1 records   52ms
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   911ms
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   51ms
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#

132ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

58ms
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 (191d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
49ms
A
52ms
MX
51ms
AAAA
52ms
TXT
911ms
CAA
51ms
HTTPS
49ms
TLSA
133ms
SOA
58ms
MTA-STS
107ms
DNSSEC
132ms
SRV
152ms
Total
1568ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 shown 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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