why espflash visit strange IP address？

[Tesla1983]

2600:9000:2753:ee00:c:7ed3:240:93a1

this IP point to Inc Amazon AWS CloudFront？

[jessebraham]

cargo-espflash and espflash check crates.io for new versions when run, since we had many cases of people running into issues which had already been resolved in subsequent releases, but they had not updated.

You can skip the checks with -S or --skip-update-check if desired.