Telco tools that run in your browser
Every tool is 100% client-side and shareable by permalink. Paste a production trace with confidence — nothing is uploaded.
SMPP PDU Decoder
flagshipDecode any v3.4 / v5.0 PDU — headers, TLVs, DCS, UDH, concatenation.
Target: SMPP PDU decoder
Open →SIP Message Analyzer
Parse, lint and explain a SIP message with a full SDP breakdown.
Target: SIP message parser
Open →USSD Flow Simulator
Run a USSD menu tree with a live MAP / SMPP protocol trace.
Target: USSD simulator online
Open →Number / HLR Utilities
E.164 validate, IMSI (E.212) decode and E.214 global-title convert.
Target: E.164 formatter, IMSI decoder, MCC MNC lookup
Open →More coming
On the roadmap: SMPP PDU builder/encoder, standalone SDP analyzer, DCS decoder, SMS (GSM 03.40) PDU decoder, an RTP bandwidth calculator, and a Sigtran (M3UA/SCCP/TCAP/MAP) decoder — the one nobody offers online.