Customer reported main drain line clog, customer has made access for technician to main drain clean out upon arrival. Estimate made and approved by customer to perform drain opening. Tech put main drain line cable into line and almost immediately hit a soft clog within two feet of the clean out and ran cable in approximately 30 feet until tech was satisfied that the cable had reached the city main. Pulled cable back and tested drain by running water in all sinks inside home, no further backups occurred during testing.