yubikey.dk

Records from scan: 2026-10-08 05:07:16  ·  769ms total  ·  last checked 2026-10-20 02:39 (unchanged)
⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records   60ms
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 Kansas City

📧 MX Records#

1 records   50ms
PriorityTTLMail ServerIP addressesPTRASN
0 10800s .  Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

1 records   55ms
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   414ms
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   63ms
FlagsTagValue
0 iodef mailto:tlsadmin@yubico.com
0 issue letsencrypt.org
0 issue pki.goog

🧩 Web & zone#

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#

92ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

64ms
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 (192d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
60ms
A
50ms
MX
50ms
AAAA
55ms
TXT
414ms
CAA
63ms
HTTPS
47ms
TLSA
90ms
SOA
64ms
MTA-STS
74ms
DNSSEC
92ms
SRV
128ms
Total
769ms

🕐 Scan History#

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