具体日志类容如下，大量类似的日志产生，只有IP变换，但是统计后台却没有记录，怀疑是虚假IP，这样情况是被攻击了吗，10来天就产生320万条，求各位大神指导

111.11.28.151 - - [25/May/2015:00:00:00 +0800] "GET / HTTP/1.1" 200 40657 "-" "nws"
111.11.28.151 - - [25/May/2015:00:00:00 +0800] "\x00" 400 172 "-" "-"
111.13.137.53 - - [25/May/2015:00:00:01 +0800] "GET / HTTP/1.1" 200 40657 "-" "nws"
111.13.137.53 - - [25/May/2015:00:00:01 +0800] "\x00" 400 172 "-" "-"
163.177.158.87 - - [25/May/2015:00:00:01 +0800] "GET / HTTP/1.1" 200 16929 "-" "nws"
58.56.110.144 - - [25/May/2015:00:00:01 +0800] "GET / HTTP/1.1" 200 40289 "-" "nws"
112.117.219.36 - - [25/May/2015:00:00:01 +0800] "GET / HTTP/1.1" 200 21309 "-" "nws"
153.3.167.17 - - [25/May/2015:00:00:01 +0800] "GET / HTTP/1.1" 200 40657 "-" "nws"
153.3.167.17 - - [25/May/2015:00:00:01 +0800] "\x00" 400 172 "-" "-"
118.180.18.146 - - [25/May/2015:00:00:02 +0800] "GET / HTTP/1.1" 200 40657 "-" "nws"
118.180.18.146 - - [25/May/2015:00:00:02 +0800] "\x00" 400 172 "-" "-"
124.228.42.49 - - [25/May/2015:00:00:02 +0800] "GET / HTTP/1.1" 200 40289 "-" "nws"
119.188.94.58 - - [25/May/2015:00:00:02 +0800] "GET / HTTP/1.1" 200 40657 "-" "nws"
119.188.94.58 - - [25/May/2015:00:00:02 +0800] "\x00" 400 172 "-" "-"

应该是采集你网站内容的IP吧