RFC 6066

E258094

IETF standard Request for Comments TLS specification

RFC 6066 is an Internet Engineering Task Force (IETF) standard that specifies Transport Layer Security (TLS) extensions, including the widely used Server Name Indication (SNI) extension.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
RFC 6066 canonical	5
RFC 6066 Section 4	1
RFC 6066, Section 4	1

How this entity was disambiguated

This entity first appeared as the object of triple T2359751 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: RFC 6066
Context triple: [RFC 3546, obsoleteBy, RFC 6066]

A. RFC 6856
RFC 6856 is an Internet standards document that updates and extends the Post Office Protocol version 3 (POP3), superseding earlier specifications such as RFC 1939.
B. RFC 6605
RFC 6605 is an Internet standards document that specifies the use of Elliptic Curve Digital Signature Algorithm (ECDSA) with the Domain Name System Security Extensions (DNSSEC) to provide more efficient cryptographic signing and validation of DNS data.
C. RFC 6176
RFC 6176 is an Internet Engineering Task Force (IETF) standard that formally disallows the use of the obsolete and insecure SSL 2.0 protocol in TLS implementations.
D. RFC 6146
RFC 6146 is an IETF standard that specifies the behavior and requirements for NAT64, enabling IPv6-only clients to communicate with IPv4 servers through protocol translation.
E. RFC 6052
RFC 6052 is an IETF standard that defines the IPv6 address format for representing IPv4 addresses, forming a core part of NAT64 and IPv4/IPv6 transition mechanisms.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: RFC 6066
Target entity description: RFC 6066 is an Internet Engineering Task Force (IETF) standard that specifies Transport Layer Security (TLS) extensions, including the widely used Server Name Indication (SNI) extension.

A. RFC 6856
RFC 6856 is an Internet standards document that updates and extends the Post Office Protocol version 3 (POP3), superseding earlier specifications such as RFC 1939.
B. RFC 6605
RFC 6605 is an Internet standards document that specifies the use of Elliptic Curve Digital Signature Algorithm (ECDSA) with the Domain Name System Security Extensions (DNSSEC) to provide more efficient cryptographic signing and validation of DNS data.
C. RFC 6176
RFC 6176 is an Internet Engineering Task Force (IETF) standard that formally disallows the use of the obsolete and insecure SSL 2.0 protocol in TLS implementations.
D. RFC 6146
RFC 6146 is an IETF standard that specifies the behavior and requirements for NAT64, enabling IPv6-only clients to communicate with IPv4 servers through protocol translation.
E. RFC 6052
RFC 6052 is an IETF standard that defines the IPv6 address format for representing IPv4 addresses, forming a core part of NAT64 and IPv4/IPv6 transition mechanisms.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	IETF standard ⓘ Request for Comments ⓘ TLS specification ⓘ
appliesTo	TLS 1.0 ⓘ TLS 1.1 ⓘ TLS 1.2 ⓘ
area	Security ⓘ
category	Standards Track ⓘ
defines	Client Certificate URL extension ⓘ Max Fragment Length extension ⓘ SNI extension ⓘ linked to: SNI Server Name Indication extension ⓘ Status Request extension ⓘ TLS extension negotiation rules for specified extensions ⓘ TLS extensions ⓘ Truncated HMAC extension ⓘ linked to: HMAC Trusted CA Indication extension ⓘ
definesField	extension_data ⓘ extension_type ⓘ
definesUseCase	virtual hosting with TLS via SNI ⓘ
enables	selection of server certificate based on hostname ⓘ
identifier	RFC 6066 ⓘ
includesExtension	client_certificate_url ⓘ max_fragment_length ⓘ server_name ⓘ status_request ⓘ truncated_hmac ⓘ trusted_ca_keys ⓘ
language	English ⓘ
obsoletes	RFC 4366 ⓘ
protocolFamily	TLS ⓘ
protocolLayer	transport layer ⓘ
publishedBy	IETF ⓘ linked to: Internet Engineering Task Force Internet Engineering Task Force ⓘ
publisher	RFC Editor ⓘ
registry	TLS ExtensionType values ⓘ
relatedTo	HTTPS virtual hosting ⓘ X.509 certificates ⓘ
series	RFC ⓘ linked to: RFCs
standardizes	format of TLS ClientHello extensions ⓘ semantics of several TLS extensions ⓘ
status	Proposed Standard ⓘ
stream	IETF ⓘ linked to: Internet Engineering Task Force
title	Transport Layer Security (TLS) Extensions: Extension Definitions ⓘ
updatesProtocol	TLS ⓘ Transport Layer Security ⓘ linked to: TLS
workingGroup	TLS Working Group ⓘ

How these facts were elicited

Referenced by (7)

Full triples — surface form annotated when it differs from this entity's canonical label.

RFC 3546 → obsoleteBy → RFC 6066 ⓘ

Server Name Indication extension → definedIn → RFC 6066 ⓘ

SNI → definedIn → RFC 6066 ⓘ

Max Fragment Length extension → definedIn → RFC 6066 ⓘ

Max Fragment Length extension → sectionOfRFC → RFC 6066 Section 4 ⓘ

linked to: RFC 6066

Client Certificate URL extension → definedIn → RFC 6066 ⓘ

Client Certificate URL extension → RFCSection → RFC 6066, Section 4 ⓘ