FCC LICENSED CARRIER ·499 FILER ·STIR/SHAKEN CERTIFIED
SIPNEX
DID Numbers

Buy DID numbers in every area code. Direct from the wholesale carrier.

Local DIDs, toll-free numbers, and vanity numbers from a wholesale DID number provider with its own FCC carrier license. Same-day provisioning, CNAM registration, and A-level STIR/SHAKEN attestation included with every number. No reseller markup.

Order DIDs See DID Pricing →

Every US Area Code

Provision local DIDs in any of the 300+ US area codes from our NANPA-allocated inventory. Metro and rural coverage nationwide. Same-day availability for most area codes.

A-Level Attestation Included

Every DID is automatically registered in our STIR/SHAKEN database. Outbound calls using SIPNEX DIDs receive A-level attestation signed with our own SP-KI certificate.

CNAM Registration Standard

We register your 15-character business name in CNAM databases during provisioning. Your name displays correctly on recipient phones from day one. No extra charge.

Local Presence Pools

Build CID rotation pools across target area codes for outbound campaigns. VICIdial CID group compatible. Spread volume across numbers to protect caller ID reputation.

Inbound + Outbound on Every DID

Every DID supports both inbound routing (calls to you) and outbound CID (calls from you) on the same SIP trunk. No separate inbound and outbound number types.

Bulk Provisioning

Need 500 DIDs across 50 area codes? Volume provisioning with bulk pricing. Managed by carrier engineers who understand call center DID strategy.

What a wholesale DID number provider does differently.

A wholesale DID number provider sells numbers from its own carrier inventory instead of reselling someone else's stock. SIPNEX draws directly on NANPA-allocated numbering resources, so when you buy DID numbers from us there is no upstream markup, no third-party provisioning queue, and no waiting on another company's support desk when a routing change is needed.

DIDs are virtual numbers: they live on the network rather than a physical line and route to your SIP endpoint over the internet. The same number works across our VoIP services — point it at a SIP trunk, a hosted PBX extension, or a dialer platform like VICIdial — and reroute it whenever your operation changes, with no new circuits or hardware.

Buying direct is also the cost-effective route. Reseller chains add margin at every hop and commonly bolt on setup and porting fees; SIPNEX charges neither, and because we operate the network end to end, every number rides the same high-quality, carrier-grade routes that carry our wholesale voice traffic.

What happens after you buy a DID number: routing is configured, CNAM is registered, and the number is added to your STIR/SHAKEN authorized CID list as part of standard provisioning. Local DIDs are live within 24 hours, and every number supports inbound routing and outbound caller ID on the same SIP trunk from day one.

SIPNEX DIDs vs typical reseller DIDs.

SIPNEX TYPICAL RESELLER
Provisioning speed 24 hours 3–5 business days
CNAM registration Included, automatic Extra charge or unavailable
STIR/SHAKEN attestation A-level (own cert) B-level (upstream signs)
Setup fee per DID None $5–$25
Porting fee None $5–$25 per number
Number source NANPA-allocated inventory Upstream carrier inventory
Area code coverage All US area codes Limited to upstream stock
Bulk provisioning Carrier-direct, same day Days to weeks

Frequently asked questions.

What is a DID number?
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.
How fast can I get new phone numbers?
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.
Can I port my existing phone numbers to SIPNEX?
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.
What is local presence dialing?
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.
Do DIDs include CNAM registration?
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.
How many DIDs do I need for my call center?
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.
Do all DIDs get A-level STIR/SHAKEN attestation?
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.
What does a DID cost?
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.

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Get DIDs from the carrier.

Same-day provisioning. CNAM included. A-level attestation from day one.

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