Let's Debug

Test result for b24.vplab.ru using http-01

Debug
Requests made to the domain
Request to: b24.vplab.ru/94.228.127.153, Result: [Address=94.228.127.153,Address Type=IPv4,Server=nginx,HTTP Status=301,Number of Redirects=1,Final HTTP Status=401], Issue:
Trace:
@0ms: Making a request to http://b24.vplab.ru/.well-known/acme-challenge/letsdebug-test (using initial IP 94.228.127.153)
@0ms: Dialing 94.228.127.153
@207ms: Server response: HTTP 301 Moved Permanently
@207ms: Received redirect to https://b24.vplab.ru/.well-known/acme-challenge/letsdebug-test
@207ms: Dialing 94.228.127.153
@545ms: Server response: HTTP 401 Unauthorized

Debug
A and AAAA records found for this domain
b24.vplab.ru. 0 IN A 94.228.127.153
Challenge update failures for b24.vplab.ru in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/6826785263
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": 94.228.127.153: Invalid response from https://b24.vplab.ru/.well-known/acme-challenge/SPNLQxIwsVuzXxDj2wA0y62-nrCkn3jYDpjp-NYUV6E: 401
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for b24.vplab.ru is: ru
Debug
1 Certificates contributing to rate limits for this domain

Serial: 373847121017815008417459807744301409221091
NotBefore: 2023-01-27 07:10:38 +0000 UTC
Names: [b24.vplab.ru]

Debug
The current status.io status for Let's Encrypt
Operational

Submitted Jan 27 15:05:33 2023. Sat in queue for 2ms. Completed in 14s. Hide verbose information.