Only to Customer (OTC)

Hold

Techniques

A BGP path attribute that marks routes as only allowed to propagate to customers.

Why it's here

Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

6Cloudflare Blog·8/18/2026research
Cloudflare tracks RFC 9234 adoption in BGP
Cloudflare says it has developed a method to measure adoption of RFC 9234 by observing which peers send the OTC attribute to its network. In the process, it found that two large Tier-1 networks strip OTC from forwarded routes, limiting route-leak prevention for early adopters.