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Social Security Number Verification Service (SSNVS) Handbook

SSNVS Handbook (246 KB) Adobe Reader icon

Table of Contents
SSNVS Front Cover
Contact Information
What is SSNVS and BSO?
System Requirements
Security
SSNVS/BSO Availability
Registration
Access to SSNVS
Logging into SSNVS
Using SSNVS
Submission File Format
Returned File Format
SSN Verification Results
Status and Retrieval Options
Status and Retrieval Results
What to Do If an SSN Fails to Verify
Logging Out
SSNVS News
Getting Help
Employer Reporting Information
Maintaining Your Registration Information
Glossary of Terms
Appendix A: Additional Verification Options

SSNVS/BSO AVAILABILITY

SSNVS normally operates during the following hours, including holidays and may be available at other times as well:

SSNVS Hours of Operation
Day Time
Monday - Friday 5:00 a.m. to 1:00 a.m. Eastern Standard Time
Saturday 5:00 a.m. to 11:00 p.m. Eastern Standard Time
Sunday 8:00 a.m. to 11:30 p.m. Eastern Standard Time

NOTE: SSNVS/BSO is not available when SSA is in the process of implementing changes to their system. Advance notice is provided on the SSNVS News page and BSO website. Also, during website down times, informational messages are displayed when a user attempts to access the system.

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