Check TLS - TLS SNI: present
TLS SNI was present - https, tls1.3, ipv6, h2
A valid "TLS SNI" was sent by the client establishing the connection. This client or browser should work properly for accessing "SNI-only" sites over HTTPS that require the presence of TLS SNI for returning the proper certificate.
Client Details
Client IP: 2600:1f28:365:80b0:4c3:3444:4978:8f3a
Client IP version: ipv6
Client port: 38894
User Agent: CCBot/2.0 (https://commoncrawl.org/faq/)
Client IP version: ipv6
Client port: 38894
User Agent: CCBot/2.0 (https://commoncrawl.org/faq/)
TLS Settings
Scheme: https
TLS Version: tls1.3
TLS SNI: check-tls.akamai.io
Host Header: check-tls.akamai.io
TLS Cipher Name: TLS_AES_256_GCM_SHA384
TLS_EXT_SIG_ALGO: 4D5D6D8E8F8G8J8K8L4B5B6B4C3D3B3C
Protocol Negotiated: h2
TLS Version: tls1.3
TLS SNI: check-tls.akamai.io
Host Header: check-tls.akamai.io
TLS Cipher Name: TLS_AES_256_GCM_SHA384
TLS_EXT_SIG_ALGO: 4D5D6D8E8F8G8J8K8L4B5B6B4C3D3B3C
Protocol Negotiated: h2
Your client negotiated tls1.3.
Your client connected with HTTP/2.
Client IP Version
Client IP version: ipv6
Your client successfully used IPv6!
About this site
This site is intended to help diagnose client behavior. There are two versions of it:
- https://check-tls.akamaized.net/ - this version supports legacy clients including those not sending TLS SNI, but may not have the latest protocols enabled.
- https://check-tls.akamai.io/ - this version supports modern clients, but only those supporting newer ciphers and those sending TLS SNI
Other ways to test various types of clients:
- TLS SNI test image (returns if TLS SNI is present)
- IP version test image (returns if IPv4 or IPv6 is used)
- TLS version test image (returns if TLS 1.2 or earlier is used)
- TLS SNI test results in JSON format
- TLS SNI test results as an RSS feed
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