Bellevue-based T-Mobile today announced that it’s effectively partnering with all major networks in the U.S. to deliver number verification to customers to protect against scam calls.

This makes T-Mobile the first in the wireless industry to implement STIR/SHAKEN with all major U.S. network providers before the June deadline set by the FCC.

According to the FCC’s website, STIR/SHAKEN is a framework of interconnected standards. (STIR and SHAKEN are acronyms for the Secure Telephone Identity Revisited and Signature-based Handling of Asserted Information Using toKENs standards.) This entails calls traveling through interconnected phone networks have their caller ID “signed” as legitimate by originating carriers and validated by other carriers before reaching consumers.

When a call comes in from any of the major carriers or any of several other smaller network providers to T-Mobile’s network, or vice versa, the companies will be able to authenticate that it is coming from the phone number displayed in Caller ID and has not been spoofed, T-Mobile said in a news release. This strengthens Caller ID in the fight against scam and robocalls.

“To date, T-Mobile has protected over 80 million customers from more than 33 billion suspect calls — and counting,” T-Mobile CEO Mike Sievert said in the release.

Last summer, T-Mobile launched Scam Shield to protect customers against scams and unwanted robocalls. With Scam Shield, T-Mobile and Metro by T-Mobile customers get automatic and free scam call warnings, the ability to block scam calls completely with Scam Block, and free Caller ID, the company said.

T-Mobile is exchanging more than 237 million calls verified by STIR/SHAKEN each day. T-Mobile provides STIR/SHAKEN implementations with AT&T, Comcast, Spectrum Voice from Charter Communications, UScellular, and Verizon Wireless as well as Altice USA, Bandwidth, Brightlink, Clear Rate, Google Fi, Inteliquent, Intrado, Magicjack, Peerless, and Twilio.