Hipchat is a notable service that seems to pick random phone numbers to send SMS notifications. It can get really confusing when they split notifications over m

Hipchat is a notable service that seems to pick random phone numbers to send SMS notifications. It can get really confusing when they split notifications over multiple messages, and the carrier drops or delays the first message or two that tell you it's from Hipchat — subsequent messages do not indicate who it is from.