Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 6289 99.7%
2 ec_point_formats (0x000b) 6250 99.4%
3 signature_algorithms (0x000d) 5869 99.0%
4 server_name (0x0000) 6514 98.2%
5 extended_master_secret (0x0017) 3777 89.0%
6 GREASE (0x0a0a) 515 84.4%
7 status_request (0x0005) 2823 83.3%
8 renegotiation_info (0xff01) 2617 82.1%
9 SessionTicket TLS (0x0023) 4248 76.0%
10 application_layer_protocol_negotiation (0x0010) 2306 74.5%
11 supported_versions (0x002b) 1064 65.6%
12 key_share (0x0033) 971 65.2%
13 psk_key_exchange_modes (0x002d) 950 64.1%
14 padding (0x0015) 1959 62.5%
15 signed_certificate_timestamp (0x0012) 1028 59.3%
16 compressed_certificate (0x001b) 131 41.1%
17 record_size_limit (0x001c) 194 7.3%
18 heartbeat (0x000f) 1546 5.8%
19 NPN (0x3374) 932 5.6%
20 token_binding (0x0018) 171 5.2%
21 pre_shared_key (0x0029) 172 4.3%
22 encrypt_then_mac (0x0016) 1045 4.1%
23 ChannelID (0x7550) 306 1.0%
24 post_handshake_auth (0x0031) 69 1.0%
25 status_request_v2 (0x0011) 82 0.3%
26 signature_algorithms_cert (0x0032) 65 0.3%
27 early_data (0x002a) 19 0.3%
28 Unknown (0xff03) 19 0.1%
29 extended_random (0x0028) 48 0.0%
30 LEGACY_token_binding (0x5500) 17 0.0%
31 LEGACY_ChannelID (0x754f) 34 0.0%
32 Unknown (0x4242) 3 0.0%
33 LEGACY_padding (0x8b47) 10 0.0%
34 Unknown (0xef00) 1 0.0%
35 Unknown (0x2cf0) 3 0.0%
36 Unknown (0x2cf2) 3 0.0%
37 truncated_hmac (0x0004) 10 0.0%
38 max_fragment_length (0x0001) 1 0.0%
39 Unknown (0xffce) 3 0.0%
40 Unknown (0x2cee) 1 0.0%
41 Unknown (0xff02) 1 0.0%