Browser
Browser error codes
These badges come from the browser when a site cannot be fetched in the ordinary way. The wording is often longer than an HTTP status. The useful part is still the code itself.
DNS_PROBE_FINISHED_NXDOMAINThe name does not existERR_NAME_NOT_RESOLVEDThe name could not be resolvedERR_CONNECTION_TIMED_OUTThe connection timed outERR_CONNECTION_REFUSEDThe connection was refusedERR_SSL_PROTOCOL_ERRORThe TLS handshake failedERR_CERT_DATE_INVALIDThe certificate dates do not cover todayERR_TOO_MANY_REDIRECTSThe page kept redirectingERR_INTERNET_DISCONNECTEDThe browser thinks you are offlineERR_BLOCKED_BY_CLIENTSomething on your machine blocked the requestERR_CACHE_MISSA form could not be replayed from cache