Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 6809 99.8%
2 signature_algorithms (0x000d) 6847 99.6%
3 server_name (0x0000) 6330 98.9%
4 ec_point_formats (0x000b) 6532 91.5%
5 extended_master_secret (0x0017) 4953 91.3%
6 renegotiation_info (0xff01) 2793 75.6%
7 application_layer_protocol_negotiation (0x0010) 3315 73.6%
8 supported_versions (0x002b) 3491 68.3%
9 key_share (0x0033) 3294 68.1%
10 status_request (0x0005) 2789 65.4%
11 psk_key_exchange_modes (0x002d) 3019 65.1%
12 SessionTicket TLS (0x0023) 3932 55.4%
13 padding (0x0015) 2327 48.5%
14 signed_certificate_timestamp (0x0012) 1054 32.4%
15 GREASE (0x0a0a) 389 29.9%
16 compressed_certificate (0x001b) 261 20.9%
17 post_handshake_auth (0x0031) 612 16.2%
18 encrypt_then_mac (0x0016) 1789 15.1%
19 pre_shared_key (0x0029) 640 10.4%
20 NPN (0x3374) 684 5.2%
21 record_size_limit (0x001c) 329 4.0%
22 encrypted_client_hello (0xfe0d) 67 3.4%
23 delegate_credential (0x0022) 140 3.4%
24 heartbeat (0x000f) 896 1.9%
25 early_data (0x002a) 53 1.8%
26 signature_algorithms_cert (0x0032) 366 1.6%
27 ChannelID (0x7550) 73 1.2%
28 status_request_v2 (0x0011) 239 0.5%
29 server_certificate_type (0x0014) 2 0.4%
30 application_settings (0x4469) 49 0.3%
31 Unknown (0xff04) 2 0.1%
32 max_fragment_length (0x0001) 31 0.1%
33 token_binding (0x0018) 25 0.0%
34 extended_random (0x0028) 26 0.0%
35 LEGACY_ChannelID (0x754f) 9 0.0%
36 Unknown (0xef00) 1 0.0%
37 LEGACY_padding (0x8b47) 5 0.0%
38 Unknown (0xff03) 6 0.0%
39 LEGACY_token_binding (0x5500) 3 0.0%
40 Unknown (0x0043) 2 0.0%
41 Unknown (0x0042) 1 0.0%
42 truncated_hmac (0x0004) 1 0.0%