3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Browser IP AddressbrowserIP

IP address of the Browser as returned by the HTTP headers to the 3DS Requestor.

Explore this field with transaction context

Message inclusion

Baseline inclusion. Effective requirements depend on transaction context. Check the field’s conditions and FAQ qualifications; select channel and category in the explorer.

MessageBaseline inclusion
AReqConditional

Conditional inclusion — source text

Required unless market or regional mandate restricts sending this information.

Format and scope

Type: String · Length: Variable, maximum 45 · Maximum length: 45

Source components
3DS Server
Device channels
02-BRW
Message categories
01-PA, 02-NPA

Reference notes

  • IPv4 representation per RFC 791, IPv6 representation per RFC 4291 Section 2.2. Should be the public IP address of the Browser connecting to the 3DS Requestor—key for ACS risk analysis. — FAQ 25 (EMVCo FAQ)

Version history

No field introduction version is tagged in the dataset. Introduction tags are curated metadata, not a full history of changes. Compare versions and understand coverage.

Source and review status

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf, Table A.1, PDF pages 211

Source review status: carried-forward. Carried-forward material has not acquired a new verification claim.

Source document fingerprint

EMV_3DS_CoreSpec_v2.3.1.1_20230530.pdf

6fdf0aba3fc1a765f96b74dad4069d1e189969f38f0023647021687daf589d6b

Official EMVCo specifications · Methodology and coverage limits