Match Cloudflare IPs with regex

ipv4 regex.txt

# https://www.cloudflare.com/ips/
# this is not meant to catch malformed IPs

/(103\.21\.24[4567]\.[0-9]+                                      # 103.21.244.0/22
 |103\.22\.20[0123]\.[0-9]+                                      # 103.22.200.0/22
 |103\.31\.[4567]\.[0-9]+                                        # 103.31.4.0/22
 |104\.(1[6789]|2[0-9]|3[01])\.[0-9]+                            # 104.16.0.0/12
 |108\.162\.(19[2-9]|2[0-9]+)\.[0-9]+                            # 108.162.192.0/18
 |131\.0\.7[2345]\.[0-9]+                                        # 131.0.72.0/22
 |141\.101\.(6[4-9]|[7-9][0-9]|1[01][0-9]|12[0-7])\.[0-9]+       # 141.101.64.0/18
 |162\.15[890]\.[0-9]+\.[0-9]+                                   # 162.158.0.0/15
 |172\.(6[4-9]|7[01])\.[0-9]+\.[0-9]+                            # 172.64.0.0/13
 |173\.245\.(4[89]|5[0-9]|6[0-3])\.[0-9]+                        # 173.245.48.0/20
 |188\.114\.(9[6-9]|10[0-9]|11[01])\.[0-9]+                      # 188.114.96.0/20
 |190\.93\.(24[0-9]|25[0-9])\.[0-9]+                             # 190.93.240.0/20
 |197\.234\.24[0-3]\.[0-9]+                                      # 197.234.240.0/22
 |198\.41\.(12[89]|1[3-9][0-9]|2[0-9][0-9])\.[0-9]+)/            # 198.41.128.0/17