DIDWW

Overview

DIDWW is a telecom carrier that sells local, mobile, national and toll-free numbers in 90+ countries, SIP trunking and business SMS. It says it holds operator licenses in 30 countries. For messaging customers it offers two-way P2P SMS on SMS-enabled numbers in 17 countries and A2P SMS from long codes and alphanumeric sender IDs in 53 countries.

Key features

• SMS trunks over HTTP, SMPP or email; inbound messages are forwarded to your endpoint and retried for up to an hour
• Outbound SMS API and sender ID verification
• Voice and SMS on the same number, plus SIP trunking for AI voice agents
• OTP verification over SMS and voice
• REST API for numbers, trunks and porting; porting is free
• MCP server for Claude, ChatGPT and Perplexity that manages numbers, routing and SMS trunks, with a sandbox

Pricing

Pay as you go with no long-term contract. A US local number starts at $1.20 a month plus $0.010 a minute inbound; toll-free starts at $5.00 a month. SMS rates are not listed on the pages checked.

How it compares to Linq

DIDWW has no iMessage and no RCS. It bills per number and per use, while Linq charges a flat monthly fee from $260 with no per-message fees. DIDWW carries voice calls both ways over SIP trunks; Linq's API only forwards inbound calls. Both publish an MCP server.

Best for

Teams that need SMS-enabled numbers and voice trunks in many countries for their own platform or AI voice agents, without iMessage.

Sources

• didww.com
• didww.com/services/two-way-sms/p2p-messaging
• didww.com/services/two-way-sms/a2p-messaging
• didww.com/coverage-and-prices/did-pricing
• didww.com/solutions/ai-voice
• didww.com/about-us
• doc.didww.com
• doc.didww.com/sms/index.html
• doc.didww.com/sms/sms-trunks/technical-data/http-specification.html
• doc.didww.com/mcp/index.html
• doc.didww.com/mcp/sandbox.html
• doc.didww.com/mcp/work-with-didww-mcp/messaging.html