LIVE · CHANNELS UP49,500
VICIDIAL-NATIVE · OPERATOR-OWNED · CARRIER-GRADE
The carrier VICIdial operators trust.
FCC-licensed. 499-registered. STIR/SHAKEN signed with our own SP certificate. Every call we originate gets A-level attestation—no resellers, no rewrapped trunks, no downstream dilution.
OR CALL AN OPERATOR · (833) 665-2220
A -level
STIR/SHAKEN attestation, signed by us
<24 hr
From signed agreement to live trunk
99.99%
Median monthly carrier uptime
1,247+
Operators dialing on SIPNEX today
FCC LICENSED CARRIER OWN STIR/SHAKEN SP CERTIFICATE 499 FILER ID A-LEVEL ATTESTATION ROBOCALL MITIGATION REGISTERED OPERATOR-OWNED DIALER-GRADE TCPA COMPLIANT TOOLING UNLIMITED CONCURRENT CHANNELS 24-HOUR PROVISIONING FCC LICENSED CARRIER OWN STIR/SHAKEN SP CERTIFICATE 499 FILER ID A-LEVEL ATTESTATION ROBOCALL MITIGATION REGISTERED OPERATOR-OWNED DIALER-GRADE TCPA COMPLIANT TOOLING UNLIMITED CONCURRENT CHANNELS 24-HOUR PROVISIONING
The dialer operator's Monday
Your generic carrier doesn't know what you do.
They sold you a trunk designed for an office phone. You're running a call center. The misfit shows up every day—in call drops, flagged CIDs, B-level attestation, and a support queue that doesn't understand what "VICIdial" means.
Your CIDs keep getting flagged
Without direct A-level attestation, your numbers degrade fast. Most resellers can only hand you B-level.
Your answer rate collapsed overnight
Carriers change STIR policy and don't tell you. You find out when your dashboard drops 30%.
Your carrier doesn't speak VICIdial
Support tickets that start with 'what's sip.conf' are a sign you're not with the right partner.
GENERIC-CARRIER · CID POOL · LIVE
● 14● 6● 4
(669) 384-4059
CLEAN
(695) 253-1931
CLEAN
(620) 649-3030
CLEAN
(834) 766-4097
CLEAN
(672) 491-3667
CLEAN
(816) 284-2078
CLEAN
(482) 427-9240
CLEAN
(892) 464-1615
CLEAN
(467) 793-4092
CLEAN
(532) 893-3143
CLEAN
(571) 420-3420
CLEAN
(381) 286-8035
CLEAN
(843) 828-5911
CLEAN
(364) 341-4717
CLEAN
(506) 228-3856
FLAGGED
(323) 407-8824
FLAGGED
(420) 473-1645
FLAGGED
(735) 460-8495
FLAGGED
(712) 392-9315
FLAGGED
(433) 350-3166
FLAGGED
(557) 352-1011
BURNED
(303) 345-7711
BURNED
(826) 328-2979
BURNED
(304) 676-6897
BURNED
B-LEVEL ATTESTATION · downstream↓ ANSWER RATE −38% (24h)
The call path
We sign your calls. Not somebody three hops away.
STIR/SHAKEN attestation is only A-level when the originating carrier signs it. SIPNEX holds its own SP-KI certificate. We sign at our edge—not via a reseller, not via a downstream wholesaler. The cert chain stops at us.
● THE SIPNEX PATH
Your call signed once, directly, A-level.
ORIGIN
Your VICIdial
OUTBOUND
A-LEVEL · SIGNED HERE
SIPNEX
CARRIER
SIPNEX SP cert
SIGNING
TERMINATION
PSTN
A-LEVEL
DOWNSTREAM CARRIER RECEIVES
ATTEST = A
Full trust · CID stays clean
○ THE GENERIC CARRIER PATH
Re-wrapped, re-signed, downgraded.
ORIGIN
Your VICIdial
OUTBOUND
UNSIGNED
RESELLER
CPaaS layer
PASS-THROUGH
CARRIER
Upstream
SIGNING
TERMINATION
PSTN
B-LEVEL
DOWNSTREAM CARRIER RECEIVES
ATTEST = B
Partial trust · CID degrades
Receipts
Inside the SIP INVITE we put on the wire.
The Identity header carries the STIR/SHAKEN PASSporT.
It points at cert.sipnex.net, our public SP cert.
Every downstream switch on the route verifies the signature against it—and sees attest=A.
You don't need to understand the math. You just need to know: every minute you dial through SIPNEX is signed at our edge. Not relayed. Not re-wrapped.
# Outgoing SIP INVITE — what your customer's carrier sees INVITE sip:+15555550100@pstn.gw SIP/2.0 From: "Acme Calls" <sip:+18006612344@sipnex.net> To: <sip:+15555550100@pstn.gw> Call-ID: 9f8a1c2d-2026-05@vd-1.acme.io Identity: eyJhbGciOiJFUzI1NiIsInBwdCI6... info=<https://cert.sipnex.net/sp.pem> ;ppt=shaken ;alg=ES256 ;attest="A" # signed by SIPNEX Content-Type: application/sdp # downstream carriers see attest=A and trust accordingly
Capability comparison
SIPNEX vs your current carrier.
The capabilities that decide whether your dialer hits 35% answer rate or 18% answer rate. Run the comparison.
CAPABILITY
SIPNEX
GENERIC
Own FCC carrier license
Often reseller
Own STIR/SHAKEN SP certificate
Shared / inherited
Direct A-level attestation
B-level typical
Unlimited concurrent channels
Capped 10–50
VICIdial-fluent support
Generic tier-1
24-hour trunk provisioning
5–10 business days
Operator-run, not sales-run
Sales-run
Transparent per-minute pricing
Quote-gated
CONCURRENT CHANNELS · BUSINESS-HOURS PEAK
SIPNEX 52,400
Mon–Fri 8a–6p CT · unlimited at the trunk
GENERIC CARRIER 50
Capped at 10–50 per trunk · upgrade gates
PROVISIONING TIME · TYPICAL
<24hr
SIPNEX · SIGNED → DIALING
5–10 days
GENERIC · TICKET QUEUE
Network footprint
Built for North American outbound.
Routes anchored on our own gear in Lubbock with diverse interconnects into Tier-1 PSTN gateways. US primary. Canada secondary. Every packet stays on-network until it has to leave.
16
PoP locations
14ms
Median latency
99.99%
Carrier uptime
Tier-1
PSTN interconnects
Frequently asked
Operator-to-operator answers.
We dial on the same network we sell. If a question isn't here, call us—someone who's run a dialer picks up.
CALL AN OPERATOR
(833) 665-2220
What is a VICIdial carrier?
A VICIdial carrier is a SIP trunk provider whose platform is specifically tuned for VICIdial's predictive dialing behavior: high concurrent channels, fast call setup, flexible CID handling, and A-level STIR/SHAKEN attestation. SIPNEX is operator-owned — we run VICIdial on our own network and sell the carrier service to other operators.
Why does my dialer need a specific carrier?
Generic carriers throttle high-velocity outbound traffic, apply B-level attestation, and have support teams that don't understand predictive dialing. VICIdial operators need unlimited channels, direct A-level signing, CID rotation flexibility, and engineers who speak sip.conf.
Can SIPNEX handle 1,000+ concurrent calls on one VICIdial instance?
Yes. Our carrier infrastructure is built for high-concurrency outbound. Channel capacity is not capped at the trunk level — you scale as your instance scales.
How do you prevent CID burn on high-velocity campaigns?
Two things matter: (1) direct A-level STIR/SHAKEN attestation from the originating carrier, which we sign ourselves with our own SP-KI certificate, and (2) intelligent CID pool management integrated with VICIdial's dialer logic. We help operators configure both.
Do you provide STIR/SHAKEN A-level attestation for VICIdial outbound?
Yes. SIPNEX holds its own STIR/SHAKEN Service Provider certificate, meaning every outbound call signed at our network is attested at the A level — not reshipped through a downstream carrier that can only provide B or C level.
How fast can I be dialing with a new SIPNEX trunk?
24 hours is typical from signed agreement to live trunk. Complex porting scenarios take longer but we provision your initial DIDs and trunk credentials within one business day.
What's the difference between SIPNEX and Bandwidth or Telnyx for VICIdial?
Bandwidth and Telnyx are excellent CPaaS carriers but are built generic-first — their support teams and tooling aren't VICIdial-specialized. SIPNEX is operator-owned and VICIdial-native, meaning every decision we make (CID tooling, channel limits, support response, pricing structure) is optimized for dialer operators.
Are you TCPA compliant?
SIPNEX provides the carrier infrastructure and compliance tooling (attestation, call recording controls, opt-out signaling) that supports TCPA-compliant outbound. The legal TCPA obligations — consent capture, DNC scrubbing, time-of-day rules — remain with the caller. We give you the tools; we don't take the responsibility off your plate.
Does SIPNEX work with predictive dialers other than VICIdial?
Yes. Any SIP-based dialer — GoAutoDial, ViciBox, Asterisk or FreeSWITCH-based platforms, or custom predictive dialers — can terminate through a SIPNEX trunk. VICIdial is where we specialize deepest, but the same high-concurrency channels, A-level attestation, and CID tooling apply to any predictive dialing platform that speaks SIP.
Is SIPNEX registered in the FCC Robocall Mitigation Database?
Yes. SIPNEX is a directly FCC-licensed carrier, an FCC Form 499 filer, and is registered in the Robocall Mitigation Database. We sign outbound traffic with our own STIR/SHAKEN Service Provider certificate rather than relying on an upstream carrier's registration.
How is wholesale SIP trunk pricing structured for dialer traffic?
Flat per-minute wholesale rates with no per-channel fees, no seat licensing, and no long-term contract. You pay for completed minutes; channel capacity scales with your dialer. Published rate tiers are on the pricing page, and volume commitments unlock lower per-minute pricing.
The next step
Talk to an operator. Not a rep.
Tell us how many instances you're running and how many minutes you dial a month. We'll tell you whether SIPNEX is the right fit—honestly.