Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 6710 99.3%
2 server_name (0x0000) 6948 98.9%
3 signature_algorithms (0x000d) 6300 98.5%
4 ec_point_formats (0x000b) 6679 96.4%
5 extended_master_secret (0x0017) 3360 85.9%
6 status_request (0x0005) 3115 85.4%
7 renegotiation_info (0xff01) 3069 82.4%
8 application_layer_protocol_negotiation (0x0010) 2591 72.0%
9 signed_certificate_timestamp (0x0012) 1142 64.4%
10 GREASE (0x0a0a) 687 58.5%
11 SessionTicket TLS (0x0023) 4920 57.3%
12 padding (0x0015) 1694 32.7%
13 psk_key_exchange_modes (0x002d) 507 31.8%
14 supported_versions (0x002b) 525 31.8%
15 key_share (0x0033) 454 31.7%
16 NPN (0x3374) 1205 26.8%
17 compressed_certificate (0x001b) 153 25.6%
18 heartbeat (0x000f) 1908 4.9%
19 token_binding (0x0018) 189 4.1%
20 pre_shared_key (0x0029) 91 3.6%
21 record_size_limit (0x001c) 134 2.9%
22 ChannelID (0x7550) 439 2.7%
23 early_data (0x002a) 16 2.7%
24 encrypt_then_mac (0x0016) 464 0.9%
25 post_handshake_auth (0x0031) 12 0.1%
26 Unknown (0xff03) 32 0.1%
27 extended_random (0x0028) 68 0.1%
28 LEGACY_token_binding (0x5500) 28 0.0%
29 LEGACY_ChannelID (0x754f) 61 0.0%
30 LEGACY_padding (0x8b47) 28 0.0%
31 status_request_v2 (0x0011) 22 0.0%
32 signature_algorithms_cert (0x0032) 7 0.0%
33 Unknown (0x4242) 4 0.0%
34 Unknown (0x2cf0) 3 0.0%
35 Unknown (0x2cf2) 3 0.0%
36 cert_type (0x0009) 4 0.0%
37 Unknown (0xef00) 1 0.0%
38 Unknown (0xff02) 1 0.0%
39 Unknown (0xffce) 3 0.0%
40 max_fragment_length (0x0001) 2 0.0%
41 Unknown (0x2cee) 1 0.0%