Top Extensions (past week)

Rank Extension Fingerprints Connections
1 supported_groups (0x000a) 6510 99.7%
2 server_name (0x0000) 6947 99.0%
3 signature_algorithms (0x000d) 6110 99.0%
4 ec_point_formats (0x000b) 6476 97.1%
5 extended_master_secret (0x0017) 3280 88.7%
6 status_request (0x0005) 3006 86.7%
7 renegotiation_info (0xff01) 3018 83.7%
8 application_layer_protocol_negotiation (0x0010) 2476 73.8%
9 signed_certificate_timestamp (0x0012) 1095 66.6%
10 GREASE (0x0a0a) 614 59.8%
11 SessionTicket TLS (0x0023) 4581 56.5%
12 padding (0x0015) 1539 50.2%
13 supported_versions (0x002b) 610 47.5%
14 psk_key_exchange_modes (0x002d) 571 47.5%
15 key_share (0x0033) 519 47.4%
16 NPN (0x3374) 1171 28.4%
17 compressed_certificate (0x001b) 138 28.2%
18 token_binding (0x0018) 176 4.1%
19 heartbeat (0x000f) 1761 3.6%
20 pre_shared_key (0x0029) 111 3.4%
21 record_size_limit (0x001c) 144 2.9%
22 early_data (0x002a) 17 2.4%
23 ChannelID (0x7550) 371 1.9%
24 encrypt_then_mac (0x0016) 419 0.9%
25 post_handshake_auth (0x0031) 21 0.2%
26 Unknown (0xff03) 24 0.1%
27 extended_random (0x0028) 70 0.1%
28 LEGACY_token_binding (0x5500) 27 0.0%
29 LEGACY_ChannelID (0x754f) 54 0.0%
30 status_request_v2 (0x0011) 29 0.0%
31 signature_algorithms_cert (0x0032) 17 0.0%
32 LEGACY_padding (0x8b47) 21 0.0%
33 Unknown (0x4242) 3 0.0%
34 Unknown (0x2cf0) 3 0.0%
35 Unknown (0x2cf2) 3 0.0%
36 Unknown (0xef00) 1 0.0%
37 cert_type (0x0009) 4 0.0%
38 Unknown (0xffce) 3 0.0%
39 max_fragment_length (0x0001) 1 0.0%
40 Unknown (0x2cee) 1 0.0%