Japan Mobile Carriers Delay New 060 Phone Prefix

Japanese mobile carriers are delaying the introduction of the 060 prefix for mobile phone numbers ^[1].

This postponement affects the national numbering plan as the country struggles to keep pace with the growing number of mobile subscribers. The availability of unique identifiers is critical for the continued expansion of telecommunications services across Japan.

For years, the industry has relied on three primary prefixes: 090, 080, and 070 ^[1]. These prefixes have served as the standard identifiers for mobile devices, but the rapid increase in mobile phone users has depleted the available pool of numbers within these ranges ^[1].

To address this shortage, regulators and carriers planned to introduce the 060 prefix to expand the capacity of the network ^[1]. The new prefix was intended to provide a fresh block of numbers to ensure that new customers and devices could be activated without interruption.

However, carriers have now pushed back the timeline for this rollout ^[1]. The delay suggests that the technical or administrative hurdles of integrating a new prefix into the existing infrastructure are more complex than initially anticipated.

Industry observers said that the exhaustion of numbering resources is a common challenge for developed nations with high mobile penetration rates. Japan's reliance on a few specific prefixes has created a bottleneck that requires a coordinated transition across all major service providers to avoid routing errors or service disruptions ^[1].

Until the 060 prefix becomes active, carriers must manage the remaining inventory of 070, 080, and 090 numbers more stringently to prevent a total depletion of available digits ^[1].