Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 6252 99.6%
2 signature_algorithms (0x000d) 5901 98.4%
3 ec_point_formats (0x000b) 6212 98.2%
4 server_name (0x0000) 6668 97.5%
5 extended_master_secret (0x0017) 3208 84.1%
6 status_request (0x0005) 2861 82.6%
7 renegotiation_info (0xff01) 2856 80.6%
8 application_layer_protocol_negotiation (0x0010) 2377 67.0%
9 SessionTicket TLS (0x0023) 4334 65.7%
10 GREASE (0x0a0a) 524 58.5%
11 signed_certificate_timestamp (0x0012) 1029 55.6%
12 supported_versions (0x002b) 652 48.1%
13 psk_key_exchange_modes (0x002d) 611 48.1%
14 key_share (0x0033) 572 48.1%
15 padding (0x0015) 1510 46.1%
16 compressed_certificate (0x001b) 123 27.6%
17 NPN (0x3374) 1063 19.3%
18 heartbeat (0x000f) 1618 6.5%
19 token_binding (0x0018) 171 5.3%
20 record_size_limit (0x001c) 159 4.7%
21 pre_shared_key (0x0029) 114 4.3%
22 ChannelID (0x7550) 337 1.9%
23 encrypt_then_mac (0x0016) 453 1.4%
24 early_data (0x002a) 20 1.3%
25 Unknown (0xff03) 27 0.2%
26 post_handshake_auth (0x0031) 19 0.1%
27 extended_random (0x0028) 57 0.0%
28 status_request_v2 (0x0011) 29 0.0%
29 LEGACY_token_binding (0x5500) 22 0.0%
30 LEGACY_ChannelID (0x754f) 47 0.0%
31 signature_algorithms_cert (0x0032) 18 0.0%
32 Unknown (0x4242) 2 0.0%
33 LEGACY_padding (0x8b47) 19 0.0%
34 Unknown (0xef00) 1 0.0%
35 Unknown (0xff02) 2 0.0%
36 Unknown (0x2cf0) 2 0.0%
37 Unknown (0x2cf2) 2 0.0%
38 cert_type (0x0009) 4 0.0%
39 Unknown (0xffce) 1 0.0%
40 Unknown (0x2cee) 1 0.0%