Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 6436 99.4%
2 signature_algorithms (0x000d) 6029 98.6%
3 ec_point_formats (0x000b) 6401 97.7%
4 server_name (0x0000) 6696 97.4%
5 extended_master_secret (0x0017) 3577 84.8%
6 status_request (0x0005) 2933 82.1%
7 renegotiation_info (0xff01) 2896 80.8%
8 application_layer_protocol_negotiation (0x0010) 2460 67.4%
9 SessionTicket TLS (0x0023) 4359 62.2%
10 signed_certificate_timestamp (0x0012) 1108 57.0%
11 GREASE (0x0a0a) 558 55.2%
12 supported_versions (0x002b) 796 51.1%
13 key_share (0x0033) 720 51.0%
14 psk_key_exchange_modes (0x002d) 730 50.6%
15 padding (0x0015) 1776 48.6%
16 compressed_certificate (0x001b) 138 26.3%
17 NPN (0x3374) 1063 22.2%
18 heartbeat (0x000f) 1604 6.3%
19 record_size_limit (0x001c) 150 5.2%
20 pre_shared_key (0x0029) 152 4.9%
21 token_binding (0x0018) 171 4.5%
22 encrypt_then_mac (0x0016) 668 1.8%
23 early_data (0x002a) 18 1.6%
24 ChannelID (0x7550) 317 1.4%
25 post_handshake_auth (0x0031) 27 0.1%
26 Unknown (0xff03) 24 0.1%
27 status_request_v2 (0x0011) 36 0.1%
28 signature_algorithms_cert (0x0032) 25 0.0%
29 extended_random (0x0028) 46 0.0%
30 LEGACY_token_binding (0x5500) 17 0.0%
31 LEGACY_ChannelID (0x754f) 40 0.0%
32 Unknown (0x4242) 4 0.0%
33 LEGACY_padding (0x8b47) 16 0.0%
34 Unknown (0xd50a) 7 0.0%
35 Unknown (0x2cf0) 3 0.0%
36 Unknown (0x2cf2) 3 0.0%
37 Unknown (0xef00) 1 0.0%
38 Unknown (0xff02) 2 0.0%
39 max_fragment_length (0x0001) 2 0.0%
40 truncated_hmac (0x0004) 5 0.0%
41 Unknown (0xffce) 1 0.0%
42 Unknown (0x2cee) 1 0.0%
43 cert_type (0x0009) 1 0.0%