The following is a list of IP addresses associated with Symantec Corporation's Online Certificate Status Protocol (OCSP) service - see Symantec OCSP - gn.symcd.com.
2.22.139.27
2.22.219.27
23.10.27.27
23.13.171.27
23.13.27.27
23.15.155.27
23.34.203.27
23.34.219.27
23.34.235.27
23.35.107.27
23.35.11.27
23.35.171.27
23.35.219.27
23.35.27.27
23.35.43.27
23.35.59.27
23.35.91.27
23.36.11.27
23.36.155.27
23.36.219.27
23.37.139.27
23.37.171.27
23.37.187.27
23.37.43.27
23.38.27.27
23.38.91.27
23.4.155.27
23.4.187.27
23.4.43.27
23.4.59.27
23.41.123.27
23.41.139.27
23.41.155.27
23.41.43.27
23.41.75.27
23.42.11.27
23.42.27.27
23.43.11.27
23.43.139.27
23.43.155.27
23.43.75.27
23.44.155.27
23.44.251.27
23.44.91.27
23.46.107.27
23.46.123.27
23.46.43.27
23.46.75.27
23.47.235.27
23.47.251.27
23.47.27.27
23.49.123.27
23.49.139.27
23.49.155.27
23.49.75.27
23.49.91.27
23.5.11.27
23.5.251.27
23.50.107.27
23.50.155.27
23.50.187.27
23.50.203.27
23.50.75.27
23.50.91.27
23.51.107.27
23.51.123.27
23.51.235.27
23.51.251.27
23.51.27.27
23.51.43.27
23.52.155.27
23.52.27.27
23.52.59.27
23.52.91.27
23.53.107.27
23.53.155.27
23.53.187.27
23.53.27.27
23.53.91.27
23.54.107.27
23.54.139.27
23.54.187.27
23.54.235.27
23.54.91.27
23.55.155.27
23.56.155.27
23.57.107.27
23.57.219.27
23.57.235.27
23.58.171.27
23.58.235.27
23.58.43.27
23.59.139.27
23.59.43.27
23.60.139.27
23.61.187.27
23.61.75.27
23.62.251.27
23.63.139.27
23.64.171.27
23.64.91.27
23.65.11.27
23.65.139.27
23.67.75.27
23.7.139.27
23.7.251.27
23.7.75.27
23.74.19.27
23.9.123.27
23.9.187.27
23.9.91.27