有一个国内大站的 typo 域名的访问量非常异常，求教

小弟有一个国内大站的 typo 域名，出于隐私起见，下面用"www.******.co" 替代，最近解析到服务器测试他的流量来源，发现有 90%的流量是 get 到 ‘www.******.co/favicon.ico’ 的流量， 按照我的理解，favicon.ico 一般是浏览器自动发起的请求，以获取网站图标的， 但是为什么日志中会有这么多不同的 ip 向 /favicon.ico 发起访问的历史那，这种访问似乎也不象是爬虫的样子。

下面附上一些访问日志，

[19/Nov/2019:09:00:36 +0800] 61.185.81.201 442 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 645 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:13 +0800] 36.43.84.58 433 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 645 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:04:23 +0800] 1.25.148.201 370 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:00:41 +0800] 183.0.181.3 366 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 696 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:02:03 +0800] 183.63.159.29 370 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 698 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36" "-" [19/Nov/2019:09:03:19 +0800] 183.63.220.34 357 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 697 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:01:13 +0800] 113.16.28.34 372 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 692 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:01 +0800] 122.227.29.237 378 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:00:51 +0800] 117.90.105.71 309 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:01:03 +0800] 180.137.159.45 316 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:40 +0800] 218.3.61.1 304 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:23 +0800] 218.75.130.251 817 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:58 +0800] 175.4.241.56 317 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 645 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:59 +0800] 183.167.232.69 322 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 644 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:00:22 +0800] 59.55.141.188 408 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 637 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:00:56 +0800] 117.43.68.140 416 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 637 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:10 +0800] 113.107.224.203 389 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36" "-" [19/Nov/2019:09:01:14 +0800] 113.108.126.28 382 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:40 +0800] 113.109.26.219 375 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:20 +0800] 61.145.58.114 376 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:33 +0800] 113.119.28.33 374 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:58 +0800] 14.114.232.6 383 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36" "-" [19/Nov/2019:09:02:30 +0800] 106.226.65.179 402 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 636 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36" "-" [19/Nov/2019:09:04:23 +0800] 1.84.42.229 428 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 645 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:00:32 +0800] 120.43.10.156 327 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 640 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:23 +0800] 117.139.244.112 436 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:57 +0800] 182.151.199.27 434 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36" "-" [19/Nov/2019:09:01:41 +0800] 120.230.81.125 337 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 648 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36" "-" [19/Nov/2019:09:03:24 +0800] 218.86.107.66 324 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 639 MISS "Mozilla/5.0 (Windows NT 6.3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:00:09 +0800] 219.156.168.188 7669 "-" "HTTP/1.1" "GET" "www.******.co" "/" 0 0 MISS "Mozilla/5.0 (Windows; U; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; BIDUBrowser 8.7)" "-" [19/Nov/2019:09:00:17 +0800] 219.156.168.188 5661 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 0 0 MISS "Mozilla/5.0 (Windows; U; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; BIDUBrowser 8.7)" "-" [19/Nov/2019:09:00:16 +0800] 60.221.226.194 375 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:00:02 +0800] 60.191.48.149 311 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 644 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36" "-" [19/Nov/2019:09:00:54 +0800] 116.210.223.182 384 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:11 +0800] 27.18.58.38 490 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 423 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:44 +0800] 171.115.19.200 4605 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 0 0 MISS "Mozilla/5.0 (Windows; U; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; BIDUBrowser 8.7)" "-" [19/Nov/2019:09:03:58 +0800] 27.27.13.61 383 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36 LBBROWSER" "-" [19/Nov/2019:09:03:59 +0800] 27.27.13.61 379 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36 LBBROWSER" "-" [19/Nov/2019:09:01:49 +0800] 125.71.75.63 384 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36 SLSUPZWDEE" "-" [19/Nov/2019:09:01:42 +0800] 111.19.84.186 387 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 689 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:00:27 +0800] 121.61.253.94 407 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:11 +0800] 59.46.34.229 378 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 639 MISS "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36" "-" [19/Nov/2019:09:03:02 +0800] 61.183.21.225 415 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:01:23 +0800] 223.75.126.54 548 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 424 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:02:41 +0800] 60.21.129.218 356 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:06:40 +0800] 60.29.153.42 381 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36" "-" [19/Nov/2019:09:02:05 +0800] 60.165.208.170 429 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:02:49 +0800] 58.22.8.168 361 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 646 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:04:55 +0800] 112.2.36.98 445 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 641 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:06:28 +0800] 183.208.199.241 398 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 641 MISS "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-" [19/Nov/2019:09:07:06 +0800] 119.117.191.34 403 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 645 MISS "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36" "-" [19/Nov/2019:09:07:08 +0800] 119.117.191.34 391 "-" "HTTP/1.1" "GET" "www.******.co" "/" 301 645 MISS "Mozilla/5.0" "-" [19/Nov/2019:09:02:13 +0800] 180.166.202.26 286 "-" "HTTP/1.1" "GET" "www.******.co" "/favicon.ico" 301 647 MISS "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36" "-"