The User Agent is the browser or bot that accesses a web site. The agent is identified by a text string in the HTTP request, and includes version and operating system details. This analysis is for agents accessing these TNG web sites by PHP requests for the last 6 months (January - June 2020).
There were 1,633 unique agent strings seen (Table 1). When major types are grouped together, there were 488. The Bots were the most frequent individual requesters as expected.
The Knowledge AI, MegaIndex, and Seekport Crawler seem the have a monthly schedule. MegaIndex and Seekport have very consistent request quantities. All three do most of their scan in a few days.. They all use the same IP address for each scan burst.
BingBot is steady day after day, and month after month, and also Google but much slower. All others are trivial and inconsistent. Bing and Google bots both use a large range of IP addresses.
As for regular user access, Windows browsers were highest as expected. And iPad access is higher than I expected. Browser users have much higher overall request counts tan TNG counts, probably because they request all the icons.
|Table 1 - Agents||All||TNG:||Jan||Feb||Mar||Apr||May||Jun|
|Knowledge AI (California)||152,377||150877||0||1,645||35,045||218||71,444||28,007|
|AspiegelBot (Huawei, CN)||42,923||40,088||0||0||9,708||14,618||12,234||0|
|PetalBot (Huawei, CN)||32,861||32,548||0||0||0||0||8,069||22,230|
|SerpstatBot (Hetzner, DE)||10,396||10,151||0||200||0||0||9,951||0|
|Linux, Android, Safari||19,061||21,505|
|MS IE (Win 7-)||2,793||1,748|
|Search Atlas SEO||726||438||0||0||438||0||0||0|