IOE · USCIS Electronic Immigration System (ELIS)
Online filings
IOE numbers are assigned by the ELIS electronic filing system and are not tied to a physical service center. Unlike legacy prefixes, the ten digits after IOE do not follow the fiscal-year + workday + sequence pattern, so you cannot infer the filing date from the number alone.
Forms this center commonly processes
I-485 · Application to Register Permanent Residence or Adjust Status
How a qualifying applicant already in the U.S. moves from a nonimmigrant status to lawful permanent residence (a green card).
I-765 · Application for Employment Authorization
Requests an Employment Authorization Document (EAD) for eligible noncitizens.
I-131 · Application for Travel Document
Requests a travel document — Advance Parole (AP) while I-485 is pending, a Re-entry Permit, or refugee travel documents.
I-90 · Application to Replace Permanent Resident Card
Replaces, renews or corrects a 10-year lawful permanent resident card.
N-400 · Application for Naturalization
How a lawful permanent resident naturalizes and becomes a U.S. citizen.
I-130 · Petition for Alien Relative
How a U.S. citizen or lawful permanent resident asks USCIS to recognize a qualifying relative for family-based immigration.
Track IOE cases
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