Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 5283 99.6%
2 ec_point_formats (0x000b) 5250 99.3%
3 signature_algorithms (0x000d) 5095 98.6%
4 server_name (0x0000) 5798 97.7%
5 extended_master_secret (0x0017) 3057 85.8%
6 renegotiation_info (0xff01) 2353 78.4%
7 status_request (0x0005) 2413 77.2%
8 SessionTicket TLS (0x0023) 3560 75.4%
9 GREASE (0x0a0a) 519 69.7%
10 application_layer_protocol_negotiation (0x0010) 2113 67.3%
11 supported_versions (0x002b) 1204 58.2%
12 key_share (0x0033) 1119 57.6%
13 psk_key_exchange_modes (0x002d) 1065 55.9%
14 padding (0x0015) 1458 53.8%
15 signed_certificate_timestamp (0x0012) 870 50.1%
16 compressed_certificate (0x001b) 152 34.0%
17 record_size_limit (0x001c) 227 7.8%
18 heartbeat (0x000f) 1196 7.2%
19 pre_shared_key (0x0029) 209 6.5%
20 token_binding (0x0018) 98 5.3%
21 NPN (0x3374) 746 5.2%
22 encrypt_then_mac (0x0016) 658 5.0%
23 post_handshake_auth (0x0031) 68 1.3%
24 ChannelID (0x7550) 204 0.7%
25 status_request_v2 (0x0011) 67 0.6%
26 signature_algorithms_cert (0x0032) 65 0.6%
27 early_data (0x002a) 27 0.3%
28 Unknown (0xff03) 13 0.1%
29 extended_random (0x0028) 37 0.0%
30 Unknown (0x4242) 4 0.0%
31 LEGACY_token_binding (0x5500) 12 0.0%
32 LEGACY_ChannelID (0x754f) 22 0.0%
33 LEGACY_padding (0x8b47) 7 0.0%
34 Unknown (0xef00) 1 0.0%
35 Unknown (0x0022) 6 0.0%
36 Unknown (0x2cf0) 1 0.0%
37 Unknown (0x2cf2) 1 0.0%
38 max_fragment_length (0x0001) 1 0.0%