To ensure ExploreLearning services are not blocked by your network, whitelist or enable the following IP ranges, ports, and domains:
IPs:
Range 1: 63.241.199.104/29 (63.241.199.104-111)
Range 2: 63.241.199.112/28 (63.241.199.112-127)
Range 3: 63.241.237.144/28 (63.241.237.144-159)
Range 4: 12.233.124.128/27 (12.233.124.128-160)
Range 5: 66.248.224.0 /22 (66.248.224.64-127)
Email IPs & Domains:
149.72.90.214 @explorelearning.com and or @science4us.com
159.183.198.234 @explorelearning.com
167.89.53.184 @reflexmath.com
168.245.56.215 @fraxmath.com
Ports:
443, 80, 25, 587, & 252
Domains: