Carrier-Grade Infrastructure

Carrier-Grade LRN Lookup. 99.99% SLA.

NPAC-direct connectivity, dedicated infrastructure, and 24/7 NOC support. Built to the standards FCC-regulated carriers demand.

Get Enterprise AccessView Pricing
99.99%
Uptime SLA
NPAC
Direct Source
24/7
NOC Support
# Carrier-grade with dedicated endpoint
Endpoint: dedicated-us-oh.sipsmart.io
✓ Uptime (30d): 100.00%
✓ P99 latency: 8ms
✓ NPAC sync lag: <1s

Infrastructure-Grade

Carrier-Grade LRN Infrastructure

The service quality that FCC-regulated carriers, CLECs, and ILECs require.

🏦

NPAC-Direct Connection

We maintain direct NPAC connectivity — no reseller intermediaries. Your LRN data comes from the authoritative source, not a downstream copy.

🛡

99.99% Uptime SLA

Enterprise SLA with financial credits for downtime. Multi-region failover and redundant NPAC connections ensure continuous availability.

🔒

Dedicated Infrastructure

Enterprise accounts get dedicated query nodes — no shared-tenant resource contention. Your traffic is isolated from other customers.

📜

Compliance Documentation

Full audit logs, SOC 2-aligned controls, and data residency guarantees. Required documentation for FCC-regulated carriers.

📞

24/7 NOC Support

Carrier-class network operations center monitoring. Critical issues escalated to on-call engineers, not a ticket queue.

⚡

Sub-10ms P99

Carrier-grade doesn't mean slow. Our infrastructure is purpose-built for latency-sensitive call routing at telecom scale.

Start Free — 1,000 Lookups Included

Developer-First

Simple REST API — No SDK Required

Request

POST https://api.sipsmart.io/v1/lrn/lookup
{
  "number": "+16145550037",
  "fields": ["lrn", "ocn", "spid", "rate_center", "lata"]
}

Response — <10ms

200 OK
{
  "number": "+16145550037",
  "lrn": "6145550037",
  "ocn": "6529",
  "spid": "6529A",
  "rate_center": "COLUMBUS",
  "lata": "330",
  "ported": true,
  "latency_ms": 7
}
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Simple, Predictable Pricing

No Surprises. Ever.

We charge less than legacy providers and publish our prices openly. No setup fees, no hidden costs, no annual lock-in required.

Starter
$0.0001
per lookup
  • ✓ Real-time LRN dip
  • ✓ Standard latency
  • ✓ HTTPS API
  • ✓ 1,000 free lookups
Best Value
Volume
$0.00005
per lookup (1M+/mo)
  • ✓ Real-time + batch
  • ✓ <10ms Ohio cluster
  • ✓ Dedicated endpoint
  • ✓ Priority SLA
Enterprise
Custom
flat-rate
  • ✓ DB replication
  • ✓ On-prem option
  • ✓ SLA guarantee
  • ✓ Dedicated support

🛡 Pricing Guarantee

We will match or beat any competitor's published price for equivalent LRN lookup volume. Contact us with a quote.

Get Started Free

FAQ

Carrier-Grade LRN FAQ

Have another question? Email us at support@sipsmart.io

  • Yes. Our infrastructure meets the requirements for NPAC data access under FCC Part 52 rules. We provide the compliance documentation, data source attestations, and audit trails that regulated carriers require.
  • Yes, for Enterprise accounts. We maintain multi-region redundancy and redundant NPAC connections. Financial SLA credits apply for downtime exceeding our guarantee. See our Enterprise contract for details.
  • Yes. CLECs use our service for both inbound routing decisions and outbound call setup. We support dedicated CLEC endpoints with enhanced data fields relevant to regulatory reporting.

Ready for Carrier-Grade LRN?

99.99% SLA, NPAC-direct, dedicated infrastructure. Contact us for Enterprise pricing.

Get Enterprise AccessView Pricing

1,000 free lookups included • No credit card required • Instant provisioning