IP addresses are rate limited on two factors, number of connection attempts from the IP address, and number of http requests - both as observed in a rolling 30 second window. The current setting is more than three connection attempts in a 30 second window and/or more than 11 http requests in a 30 second window will get you rate limited for 5 minutes.

HTTP code 429 (too many requests) will be received

Has a rate limit of 5000/hour for OAuth client For unauthenticated requests, the rate limit allows for up to 60 requests per hour

~20 requests concurrently

403 forbidden is received

Git web (HTTPS://) requests -> 60,000 requests per hour

List a repository's commits (/2.0/repositories/{username}/{slug}/commits) -> 1,000 per hour

HTTP code 429 (too many requests) will be received

If personal usage exceeds 200 times the consumption of a typical user within a (sliding) five-minute window.

HTTP code 429 (too many requests) will be received

No concurrent connection limits