When you create a Google redirect backlink, it's not necessary to ping it for Moz to recognize it. Moz's web crawlers will eventually discover and index the backlink as they crawl the web. However, pinging the backlink might expedite the process of discovery, especially if you want Moz to recognize it quickly.
Pinging refers to notifying search engines or other web services about new content or changes on your website. While it's not mandatory for Moz to recognize backlinks, it can be a proactive step to ensure that the backlink is indexed promptly.
To ping the backlink, you can use various online ping services or tools that notify search engines about new URLs. Additionally, you can submit the URL directly to Moz using their Link Explorer tool, which allows you to analyze backlinks and track their performance.
Keep in mind that while pinging the backlink may help speed up the indexing process, it's just one of many factors that influence how quickly search engines and tools like Moz discover and index new links. Other factors such as the authority of the linking site, the frequency of crawls, and the relevance of the content also play a role in determining when the backlink will be recognized.