MAP SRI-SM (2G/3G)
Send Routing Information for SM against the destination HLR. Returns IMSI, serving MSC, and message-waiting status. Cleaned through the firewall first.
SRI-SMIMSIServing MSC
HLR Lookup · MAP SRI-SM · S6a
Query the HLR. Know who owns the number.
An HLR lookup asks a mobile number's home network whether the number is live, which network serves it and whether it is roaming. BroadNet HLR Lookup gives operators and messaging platforms that answer straight from the destination network.
MAP SRI-SM and S6a against the destination operator — directly.
HLR Lookup runs live MAP SRI-SM (2G/3G) and Diameter S6a (LTE/5G) queries against the destination network. The response returns the serving MCC/MNC, IMSI, roaming status, and last-known reachability — giving operators and platforms the ground truth before they spend money routing or messaging the number.
MAP SRI-SM · S6aDirect GT peeringGSMA Associate Member
MAP SRI-SM transaction · sample
MAP SRI-SM · p99 350msOrigin SMSC
operator A
BroadNet STP
DXB · FRA · SIN
Destination HLR
operator B
1SRI-SM RequestOrigin SMSC → BroadNet STP
0ms2SRI-SM → MAPBroadNet STP → Destination HLR
+88ms3IMSI · Serving-MSCDestination HLR → BroadNet STP
+201ms4SRI-SM ackBroadNet STP → Origin SMSC
+288msIMSI
424021100…
MCC / MNC
424 / 02
REACHABLE
YES · 0.98
Capabilities
Operator-grade HLR, not a scraping service.
BroadNet operates direct SS7 and Diameter peering over 1,000+ direct operator connections. HLR Lookup is the productised API on top of that signalling footprint — every query terminates at the real destination HLR / HSS.
Diameter S6a (LTE/5G)
Insert-Subscriber-Data, Update-Location, and Cancel-Location traces against the destination HSS. Native 4G / 5G reachability ground truth.
ULRISDCLR
Reachability scoring
Combines HLR response, last-known roaming country, and historical delivery rates into a 0–1 reachability score per MSISDN.
0.0–1.0 scorePer-MSISDNUpdated on activity
SIM swap signal
Detect changes in IMSI or serving network between lookups. Surface a webhook to bank and OTP partners before authorising sensitive actions.
IMSI deltaWebhookBank-grade
Compliance-first
MSISDN hashing, per-tenant key isolation, regulator allow/deny lists, full audit trail. Compatible with GDPR, GCC privacy laws, and India's DPDPA.
Hashed at restPer-tenantAudit trail
Low-latency PoPs
Active PoPs in Dubai, Frankfurt, Singapore, and São Paulo. Lookups terminate at the regionally-nearest signalling gateway.
Dubai · FrankfurtSingapore · SPAnycast
Outcomes
Why operators put HLR Lookup in front of every SMSC.
Pre-validating with HLR removes the cheapest source of A2P waste — sending to numbers that don't answer. Operators see measurable uplift in delivery rates and a fall in commercial-dispute volume within weeks.
Direct peerings
1,000+
SS7 + Diameter signalling reach
p99 end-to-end
350ms
Lookup + network round-trip
Dead numbers filtered
Pre-send
Unreachable numbers removed before you pay to send
SLA target
99.99%
24/7 MENA NOC, operator-grade
Compliance & certification
Signalling we own. Compliance we audit.
GSMA Associate Member
Direct signalling membership
Direct SS7 / Diameter peering over 1,000+ direct operator connections — not a reseller of someone else's HLR feed.
GDPR · DPDPA
Privacy by design
MSISDNs hashed at rest, per-tenant key isolation, configurable regulator allow/deny lists.
ISO 27001 · SOC 2
Operational security
ISO 27001-certified infrastructure with SOC 2 Type II controls, audited annually.
GSMA Associate MemberISO 27001ISO 9001ISO 22301SOC 2GDPRMEF
Related for operators
Other carrier-side products in this stack.
Number Lookup
HLR / MNP / portability lookup across 200+ countries.
Explore
SMS Firewall
Block grey routes, smishing and sender-ID spoofing at line rate.
Explore
Signaling Firewall
SS7 + Diameter inspection. GSMA FS.11 Cat 1/2/3 categorization.
Explore
SMSC Gateway
Carrier-grade SMSC — SMPP 3.4/5.0, SS7 MAP, Diameter, HTTP.
Explore
Direct to carrier engineering
Talk to carrier engineering.
A 30-minute working session with the engineers who deploy this gear at Tier-1 operators. Bring your traffic map, your last quarter’s A2P P&L, and the route you’re worried about — we will tell you where the leak is.
$ ssh carrier-eng@broadnet.me — ref:hlr-lookup