3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

Browser IP AddressbrowserIP

Browser IP Address in Authentication Request (AReq).

Source edition: Core 2.3.1.1 · Type: String · Length: Variable, maximum 45 · Maximum length: 45

Baseline in AReq Conditional

Varies by context. Requirement or applicability varies by channel or message category. Select a specific context to resolve it. Usage and conditions ↓

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Usage in AReq

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

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. Channels: 02-BRW. Categories: 01-PA, 02-NPA.

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

Related FAQ 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)

Transaction context

This reference covers the published source edition. Use the explorer to inspect this field and any applicable transaction conditions. Scheme programme requirements are not inferred from the protocol edition.

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Sources and related references

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.

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