Gayathri Enterprises delivers SS7 / SIGTRAN signal testing, SMS route validation, HLR & MNP lookups, and authorized security audits — directly from bare-metal interconnects in production mobile cores.
Six protocol-grade capabilities, built on direct SS7 / Diameter interconnects — not scraped data, not cached APIs.
End-to-end A2P and P2P SMS delivery testing across all Indian operators via MAP SRI-SM queries. Measure latency, verify routing, and detect grey-route leakage in real time.
Learn more →Real-time HLR queries for subscriber status, IMSI retrieval, and MNP verification. Direct SS7 signaling — no cached databases, no stale information.
Learn more →Validate inbound/outbound roaming with full MAP signaling flow analysis: Update Location, auth vectors, Cancel Location, and Insert Subscriber Data verification.
Learn more →Authorized vulnerability assessment of SS7 networks. Test MAP filtering, SCCP GT screening, firewall rules, and detect configuration gaps attackers could exploit.
Learn more →Continuous performance monitoring: delivery rates, response times, error breakdown, and link availability with real-time dashboards and alerting.
Learn more →Full-stack SIGTRAN testing: SCTP, M3UA, SCCP, TCAP, and MAP. Protocol compliance, performance, and interoperability validation against major vendor equipment.
Learn more →Most testing vendors resell public APIs. We operate our own SS7 / SIGTRAN gateways in production carrier environments — the same infrastructure used by banks, governments and tier-1 operators to validate billions of signaling messages every month.
No proxy hops, no third-party APIs. We sign on MAP / Diameter directly.
Every audit is scoped, signed-off, and follows GSMA FS.19 / IR.82 baselines.
Geographically distributed STPs deliver sub-second test results, every time.
Reach a senior telecom engineer in < 5 minutes, 24×7×365.
A predictable engagement model built for security, audit and operations teams.
We sign an NDA and a written scope-of-test document. Every signal we send is pre-approved.
Either we use our existing operator interconnect, or stand up a private SIGTRAN link in days.
Authored test cases with full PCAP capture, log replay, and a live dashboard for your team.
Detailed report with severity ratings, fix recommendations, and a re-test to confirm closure.
Tier-1, Tier-2 carriers, MVNOs and IPX providers
SMS OTP, transaction alerts, fraud detection
Red teams, MSSPs, and CSIRT organizations
Telecom regulators, defense agencies, lawful intercept
Fleet tracking, smart meters, M2M connectivity
Critical alerts, patient notifications, mHealth apps
The Gayathri team found three critical SS7 misconfigurations our previous auditor had missed for two years. Their report was technical, actionable, and didn't sugar-coat anything.
We use their HLR lookup API to power fraud scoring on every transaction. Sub-100ms response, no rate-limit games, and their engineers actually pick up the phone.
After their SS7 audit we plugged seven real attack vectors. Three months in, zero fraud events on the routes that were previously leaking. The ROI was immediate.
