# 510 Not Extended

> HTTP response status code

**Wikidata**: [Q97446112](https://www.wikidata.org/wiki/Q97446112)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/HTTP_510)  
**Source**: https://4ort.xyz/entity/510-not-extended


## References

1. RFC 2774: An HTTP Extension Framework