A pattern where calls from some originating carriers reach the new provider while others still reach the old one is consistent with those carriers not querying correctly on an N-1 basis or not yet holding the updated NPAC routing data, rather than with a missing activation.
inferred · Checked 2026-10-02
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- lnp-query
- Deployment
- pstn
- Region
- us
- Release range
- current as of 2026-10-02
- Status
- inferred
- Checked
- 2026-10-02
Sources
- Porting and Access — NPAC (iconectiv, Local Number Portability Administrator) · tier 1 standards and regulators · How Porting Works section, combined with 47 CFR 52.26 N-1 provision
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-partial-carrier-inference. WarmTransfer. https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-partial-carrier-inference
BibTeX
@misc{warmtransfer-claim-post-port-routing-troubleshooting-partial-carrier-inference,
title = {Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-partial-carrier-inference},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-partial-carrier-inference},
note = {Source note post-port-routing-troubleshooting-partial-carrier-inference, checked 2026-10-02}
}