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Field notes from Africa's telecom layer.

Routing economics, AI in the contact center, SIP trunk migrations, and the quiet decisions that move pickup rates. Written by the team running the network.

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835 Area Code: A Lehigh Valley Overlay Two Decades in the Making

Farheen Moghul·Jul 15, 2026

The 835 area code overlays Pennsylvania's 610 and 484 across the Lehigh Valley, with number assignment beginning September 2, 2022. It covers Allentown, Bethlehem, and Reading across roughly a dozen counties without reassigning a single existing number.

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