TLSdex
Got a hex? Check the dex.
Find the hex. Get the specs.
Press / to focus search. Try a symbolic name, a hex value like 0xC02B, or a decimal like 49195.
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Possible identifiers
Matches below are shown as possible identifiers found in your pasted text — TLSdex does not parse TLS packet bytes or claim any protocol structure.
| Register | Name | Hex | Decimal | Recommended |
|---|
No matches. Try a different name, hex value, or decimal number.
About TLSdex
TLSdex is a lookup tool for TLS protocol identifiers — cipher suites, extensions, alerts, signature schemes, supported groups, and handshake types. Paste a hex value, a symbolic name, or a decimal number and TLSdex finds the matching entries, sourced directly from IANA's registries. Everything runs in your browser; nothing is uploaded.
TLSdex is an independent reference. TLSdex is not affiliated with IANA or the IETF. Source data comes from the IANA Protocol Registries: TLS Parameters and TLS ExtensionType Values.
IANA's Recommended column value of D means "Discouraged" — that is IANA's own registry designation, not a TLSdex judgment call. A value of N is simply "not marked Recommended by IANA"; TLSdex does not editorialize this as unsafe or insecure.