Under FCC rules each designated N-1 carrier is responsible for ensuring number portability database queries are performed on an N-1 basis, where N is the entity terminating the call.
Checked 2026-10-02
each designated N-1 carrier ... is responsible for ensuring number portability queries are performed on a N-1 basis
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- lnp-query
- Deployment
- pstn
- Region
- us
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- 47 CFR § 52.26 - NANC Recommendations on Local Number Portability Administration — Legal Information Institute (Cornell Law School), reproducing the Code of Federal Regulations · tier 1 standards and regulators · 47 CFR 52.26(b) (N-1 query provision; paragraph number not confirmed in rendering)
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-n1-query-responsibility. WarmTransfer. https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-n1-query-responsibility
BibTeX
@misc{warmtransfer-claim-post-port-routing-troubleshooting-n1-query-responsibility,
title = {Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-n1-query-responsibility},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-n1-query-responsibility},
note = {Source note post-port-routing-troubleshooting-n1-query-responsibility, checked 2026-10-02}
}