=== Received Headers ===

HTTP_REFERER: NOT SET
HTTP_USER_AGENT: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
REMOTE_ADDR: 216.73.216.17
REQUEST_URI: /elster_int/test_referer.php

=== All HTTP Headers ===

HTTP_X_HTTPS: 1
HTTP_HOST: tehranarrow.click
HTTP_ACCEPT_ENCODING: gzip, br, zstd, deflate
HTTP_USER_AGENT: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
HTTP_ACCEPT: */*