說明在這份文件
https://support.google.com/a/answer/10026322

他的 IP List
https://www.gstatic.com/ipranges/goog.json

syncToken "1651770103547"
creationTime "2022-05-05T10:01:43.547311"
prefixes
0
ipv4Prefix "8.8.4.0/24"
1
ipv4Prefix "8.8.8.0/24"
2
ipv4Prefix "8.34.208.0/20"
3
ipv4Prefix "8.35.192.0/20"
4
ipv4Prefix "23.236.48.0/20"
5
ipv4Prefix "23.251.128.0/19"
6
ipv4Prefix "34.64.0.0/10"
7
ipv4Prefix "34.128.0.0/10"
8
ipv4Prefix "35.184.0.0/13"
9
ipv4Prefix "35.192.0.0/14"
10
ipv4Prefix "35.196.0.0/15"
11
ipv4Prefix "35.198.0.0/16"
12
ipv4Prefix "35.199.0.0/17"
13
ipv4Prefix "35.199.128.0/18"
14
ipv4Prefix "35.200.0.0/13"
15
ipv4Prefix "35.208.0.0/12"
16
ipv4Prefix "35.224.0.0/12"
17
ipv4Prefix "35.240.0.0/13"
18
ipv4Prefix "64.15.112.0/20"
19
ipv4Prefix "64.233.160.0/19"
20
ipv4Prefix "66.102.0.0/20"
21
ipv4Prefix "66.249.64.0/19"
22
ipv4Prefix "70.32.128.0/19"
23
ipv4Prefix "72.14.192.0/18"
24
ipv4Prefix "74.114.24.0/21"
25
ipv4Prefix "74.125.0.0/16"
26
ipv4Prefix "104.154.0.0/15"
27
ipv4Prefix "104.196.0.0/14"
28
ipv4Prefix "104.237.160.0/19"
29
ipv4Prefix "107.167.160.0/19"
30
ipv4Prefix "107.178.192.0/18"
31
ipv4Prefix "108.59.80.0/20"
32
ipv4Prefix "108.170.192.0/18"
33
ipv4Prefix "108.177.0.0/17"
34
ipv4Prefix "130.211.0.0/16"
35
ipv4Prefix "136.112.0.0/12"
36
ipv4Prefix "142.250.0.0/15"
37
ipv4Prefix "146.148.0.0/17"
38
ipv4Prefix "162.216.148.0/22"
39
ipv4Prefix "162.222.176.0/21"
40
ipv4Prefix "172.110.32.0/21"
41
ipv4Prefix "172.217.0.0/16"
42
ipv4Prefix "172.253.0.0/16"
43
ipv4Prefix "173.194.0.0/16"
44
ipv4Prefix "173.255.112.0/20"
45
ipv4Prefix "192.158.28.0/22"
46
ipv4Prefix "192.178.0.0/15"
47
ipv4Prefix "193.186.4.0/24"
48
ipv4Prefix "199.36.154.0/23"
49
ipv4Prefix "199.36.156.0/24"
50
ipv4Prefix "199.192.112.0/22"
51
ipv4Prefix "199.223.232.0/21"
52
ipv4Prefix "207.223.160.0/20"
53
ipv4Prefix "208.65.152.0/22"
54
ipv4Prefix "208.68.108.0/22"
55
ipv4Prefix "208.81.188.0/22"
56
ipv4Prefix "208.117.224.0/19"
57
ipv4Prefix "209.85.128.0/17"
58
ipv4Prefix "216.58.192.0/19"
59
ipv4Prefix "216.73.80.0/20"
60
ipv4Prefix "216.239.32.0/19"
61
ipv6Prefix "2001:4860::/32"
62
ipv6Prefix "2404:6800::/32"
63
ipv6Prefix "2404:f340::/32"
64
ipv6Prefix "2600:1900::/28"
65
ipv6Prefix "2606:73c0::/32"
66
ipv6Prefix "2607:f8b0::/32"
67
ipv6Prefix "2620:11a:a000::/40"
68
ipv6Prefix "2620:120:e000::/40"
69
ipv6Prefix "2800:3f0::/32"
70
ipv6Prefix "2a00:1450::/32"
71
ipv6Prefix "2c0f:fb50::/32"