Officials have specifically designated the 700 number segment as the dedicated segment for the "number protection service", with a management length of 11 digits and an actual use of 15 digits.

A statement by 官方. Statements are as reported by the cited publishers — not verified by DecisionGateway.

这次官方还专门把700号段规划出来，作为“号码保护服务”的专用号段，管理长度11位，实际用到15位。