Phone numbers in every area code. Provisioned by the carrier.

DID stands for Direct Inward Dial — a phone number that routes directly to your SIP trunk endpoint without going through an operator. DIDs can be local (geographic area code), toll-free (800/888/877/866/855/844/833), or vanity. On SIPNEX, each DID supports both inbound and outbound calling on the same trunk.

SIPNEX provisions local DIDs within 24 hours. We assign numbers from our NANPA-allocated inventory, configure routing, register CNAM, and add the number to your STIR/SHAKEN authorized CID list as part of standard provisioning. Bulk orders across many area codes may take slightly longer depending on inventory.

Yes. FCC regulations guarantee number portability. Submit a Letter of Authorization and we handle the port submission, FOC scheduling, and cutover. Simple ports complete in 7 to 14 business days. You can dial on new SIPNEX DIDs immediately while existing numbers port in the background.

Local presence dialing displays an outbound caller ID with an area code matching the recipient's area code. When you call a 214 number, your CID shows a 214 number. Answer rates improve 15 to 30 percent compared to non-local or toll-free caller ID. SIPNEX provisions local presence DID pools across all US area codes.

Yes. Every DID provisioned by SIPNEX includes CNAM (Caller ID Name) registration at no additional charge. We register your 15-character business name in the CNAM database so your name displays correctly on inbound and outbound calls. CNAM propagates within 24 to 72 hours.

For outbound local presence with CID rotation: 5 to 10 DIDs per area code you call into, across every target area code. A national outbound operation might use 500 to 3,000 DIDs. For inbound: one DID per routing destination (main line, sales, support). SIPNEX offers volume pricing for large DID orders.

Yes. Every DID provisioned or verified by SIPNEX is registered in our STIR/SHAKEN database and receives A-level attestation on outbound calls. We hold our own SP-KI certificate and sign directly — no reseller intermediary, no B-level compromise.

Local DIDs: $1 to $3 per month. Toll-free: $2 to $5 per month. No setup fees, no porting fees. Volume discounts available for large orders. Per-minute usage is billed separately at published wholesale rates. See our pricing page for the full rate card.