Carrier services for operators.
Voice, numbers, and messaging from an FCC-licensed carrier with its own STIR/SHAKEN certificate. Every service includes A-level attestation. No reseller markup.
SIPNEX operates as a direct carrier on the US telephone network. That means every service on this page is delivered by SIPNEX — not resold from a third party, not rewrapped from an upstream provider. When you buy SIP trunking, your outbound calls originate from our switches. When you provision a DID, the number is allocated directly to us by the NANPA administrator. When you send SMS or MMS, the messages route through carrier-direct connections to Tier 1 messaging partners with no CPaaS middleware in the path.
That directness matters for three reasons. Attestation: we sign every outbound call with our own STIR/SHAKEN SP-KI certificate at A-level — the highest level the framework supports. Pricing: you pay carrier wholesale rates, not reseller retail rates, because there is no middle layer taking a margin. Support: when you call about a routing issue or an attestation question, the engineer who answers has root on the platform being discussed — not a partner's ticket queue.
Pick the service that matches what you are building. SIP trunking for dialers and contact centers. DIDs and toll-free for inbound. SMS for customer engagement. Call tracking for attribution. Hosted PBX for a turnkey phone system. Each card below links to a dedicated page with pricing, technical specs, FAQ, and a path to provisioning.
SIP Trunking
Unlimited concurrent channels, A-level STIR/SHAKEN attestation, wholesale per-minute pricing. The trunk built for predictive dialers and call centers.
SIP Trunking for PBX
The carrier under your PBX — 3CX, FreePBX, Asterisk, Yeastar, Avaya, and more. Registration or IP auth, tested configuration guides, no channel caps.
DID Numbers
Local DIDs in every US area code, toll-free, and vanity numbers. Same-day provisioning from our NANPA-allocated inventory. CNAM and attestation included.
Toll-Free Numbers
800, 888, 877, 866, 855, 844, 833 — all prefixes. Direct from a registered RespOrg. Vanity search, 24-hour provisioning, no setup fees.
SMS & MMS Messaging
Business text messaging on the same DIDs as your voice. A2P 10DLC registration handled. Carrier surcharges itemized. No separate platform needed.
Call Tracking
Tracking DIDs at carrier-direct pricing. Assign unique numbers to campaigns, read the CDRs, attribute every inbound call. No platform markup.
Hosted PBX
Cloud phone system from an FCC-licensed carrier. All features included — voicemail, auto-attendant, recording, ring groups. No feature-tier upselling.
E911 Service
Registered Location provisioned at turn-up on every DID and trunk, with dispatchable-location guidance for MLTS. Available in the 50 US states.
Every service backed by carrier credentials.
SIPNEX is an FCC-licensed telecommunications carrier with its own STIR/SHAKEN Service Provider certificate, Form 499 filing, and Robocall Mitigation Database registration. Every service on this page is delivered directly by the carrier — not resold from an upstream provider.