Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 5977 99.6%
2 server_name (0x0000) 5779 99.3%
3 signature_algorithms (0x000d) 5611 99.2%
4 ec_point_formats (0x000b) 5933 97.2%
5 extended_master_secret (0x0017) 3479 90.2%
6 status_request (0x0005) 3029 87.0%
7 renegotiation_info (0xff01) 2902 84.8%
8 application_layer_protocol_negotiation (0x0010) 2570 78.2%
9 signed_certificate_timestamp (0x0012) 1156 66.9%
10 supported_versions (0x002b) 1006 65.8%
11 key_share (0x0033) 909 65.6%
12 psk_key_exchange_modes (0x002d) 903 65.4%
13 padding (0x0015) 1593 60.9%
14 GREASE (0x0a0a) 583 60.7%
15 SessionTicket TLS (0x0023) 4220 57.3%
16 compressed_certificate (0x001b) 135 29.6%
17 NPN (0x3374) 1008 11.2%
18 pre_shared_key (0x0029) 203 6.9%
19 token_binding (0x0018) 149 4.0%
20 record_size_limit (0x001c) 180 3.6%
21 heartbeat (0x000f) 1386 3.5%
22 early_data (0x002a) 24 2.2%
23 encrypt_then_mac (0x0016) 525 1.9%
24 ChannelID (0x7550) 324 0.7%
25 post_handshake_auth (0x0031) 39 0.2%
26 signature_algorithms_cert (0x0032) 53 0.1%
27 status_request_v2 (0x0011) 59 0.1%
28 Unknown (0xff03) 21 0.0%
29 extended_random (0x0028) 48 0.0%
30 LEGACY_token_binding (0x5500) 18 0.0%
31 LEGACY_ChannelID (0x754f) 29 0.0%
32 LEGACY_padding (0x8b47) 16 0.0%
33 Unknown (0x4242) 3 0.0%
34 Unknown (0x2cf0) 3 0.0%
35 Unknown (0x2cf2) 3 0.0%
36 Unknown (0xd50a) 2 0.0%
37 Unknown (0xff02) 2 0.0%
38 Unknown (0xef00) 1 0.0%
39 Unknown (0xffce) 2 0.0%
40 max_fragment_length (0x0001) 3 0.0%
41 Unknown (0x2cee) 1 0.0%