Carrier · Number planning
Enter an NPA-NXX or target city/state and get rate center, LATA, likely local carrier, portability notes, and E911 jurisdiction guidance. Perfect for prepping new DID orders and portability LOAs.
Before you promise a client a 212 number in midtown Manhattan or a 415 number in SoMa, check what's actually available. Some rate centers are dry, some have specific carrier lock-in, and LATA boundaries still matter for inter-LATA cost accounting.
The snapshot shows: rate center, LATA, typical local carrier, expected portability lead time, and the E911 PSAP jurisdiction. For authoritative data on a specific NPA-NXX, ask your SIP carrier to run a LERG lookup — the data here is a curated snapshot for planning.
Rate centers are the US telephone industry's geographic anchor for a number. Your prefix determines which rate center a number is "local" to. For 911, the PSAP (public safety answering point) is determined by the physical service address you register with the carrier — not the rate center. Mixing these up is the #1 E911 mis-route mistake.
US local porting: 3-6 weeks for an enterprise block. Toll-free: 3-5 business days. Expect delays if account info doesn't match the CSR exactly.
Sometimes. Ask your carrier for a vanity search against the NPA-NXX. Availability is first-come.
212 is LATA 132, rate center Manhattan. Typical port window 3-4 weeks. LOA requires matching BTN, account number, and billing name. PSAP mapping is NYC 911, handled per physical address.
415 LATA 722, rate center San Francisco. Carriers vary on 415 inventory — some dry, some have 100-block minimum. Confirm before quoting.