C2W supports UPS, USPS, FedEx, DHL Express, DHL eCommerce, OnTrac, UniUni and GOFO. Use the carrier guides to evaluate your services, map response fields, and plan an on-demand integration.
USPS Tracking API
Handle postal events without losing detail.
Read the guide →FedEx Tracking API
Keep service, status, and delivery time separate.
Read the guide →UPS Tracking API
Make status changes useful to your support team.
Read the guide →DHL Tracking API
Evaluate Express and eCommerce as distinct services.
Read the guide →UniUni Tracking API
Evaluate your UniUni delivery workflows.
Read the guide →OnTrac Tracking API
Keep OnTrac and legacy LaserShip identifiers intact.
Read the guide →GOFO Tracking API
Evaluate GOFO data for your actual shipment routes.
Read the guide →Confirm service-level coverage
Carrier names do not guarantee every service, route, field, or tracking-number format. Evaluate representative shipments before migration. For coverage questions, send your carrier service names and routes to C2W support.
The documented GET endpoint takes one tracking number. Webhooks are not supported. See pricing for request and rate limits.