A2P SMS routes to Antarctica

Fraud and security International Revenue Share Fraud (IRSF): How to Stop It International revenue share fraud (IRSF) in telecom: how it works, warning signs, detection rules, spend limits and the contract clauses on who pays. Fraud and security SMS Firewall: What It Is and How It Works SMS firewall explained: what an operator A2P SMS firewall checks, why it blocks grey route and spam traffic, and how senders keep messages delivered. A2P SMS MCC MNC List: Mobile Country and Network Codes What MCC and MNC codes are, examples from the MCC MNC list, how they identify mobile networks and how SMS providers use them for pricing and routing. A2P SMS Is SMS OTP Secure? Risks and Alternatives SMS OTP security explained: SIM swap, SS7 and phishing risks, banking regulators moving away from SMS OTP, and safer alternatives as of 2026. Fraud and security CLI Spoofing: Caller ID Rules for Carriers (US and UK) CLI spoofing for carriers and call centers: lawful caller ID presentation vs spoofing, FCC and Ofcom rules as of 2026 and the impact on routes. A2P SMS SMS Carrier Filtering: What Content Gets Blocked How carrier filtering of SMS works: what OTP, transactional and promotional routes accept, restricted categories, country rules and common filter triggers.