NIST SP 800-63B-4 requires an out-of-band authentication to be treated as invalid unless it is completed within 10 minutes.

Checked 2026-09-30

Vendor
NIST
Product
SP 800-63B-4
Subsystem
out-of-band authenticators
Deployment
any
Region
us
Release range
revision 4
Checked
2026-09-30

Sources

Cite this note

APA

WarmTransfer. (2026, September 30). Caller authentication and fraud prevention in contact centers: source note contact-center-caller-authentication-nist-oob-10-minutes. WarmTransfer. https://warmtransfer.net/knowledge/claims/contact-center-caller-authentication-nist-oob-10-minutes

BibTeX

@misc{warmtransfer-claim-contact-center-caller-authentication-nist-oob-10-minutes,
  title  = {Caller authentication and fraud prevention in contact centers: source note contact-center-caller-authentication-nist-oob-10-minutes},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/contact-center-caller-authentication-nist-oob-10-minutes},
  note   = {Source note contact-center-caller-authentication-nist-oob-10-minutes, checked 2026-09-30}
}

Read in context