| 199.30.233.0 | network.zixcorp.com | — |
| 199.30.233.1 | — | — |
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| 199.30.233.18 | — | — |
| 199.30.233.19 | sftp.zixcorp.com | — |
| 199.30.233.20 | — | — |
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| 199.30.233.63 | — | — |
| 199.30.233.64 | — | — |
| 199.30.233.65 | qaexternaldns.zixtest.com | — |
| 199.30.233.66 | — | — |
| 199.30.233.67 | zix-mrktg-rodc.mrktg.zixadmin.com | — |
| 199.30.233.68 | — | — |
| 199.30.233.69 | — | — |
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| 199.30.233.79 | — | — |
| 199.30.233.80 | — | — |
| 199.30.233.81 | ems.zems.zixdemo.com | — |
| 199.30.233.82 | portus.corp.zixnet.com | — |
| 199.30.233.83 | — | — |
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| 199.30.233.99 | — | — |
| 199.30.233.100 | extexpye.zixcorp.com | — |
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| 199.30.233.105 | — | — |
| 199.30.233.106 | — | — |
| 199.30.233.107 | — | — |
| 199.30.233.108 | outbound-199-30-233-108.zixcorp.com | — |
| 199.30.233.109 | — | — |
| 199.30.233.110 | — | — |
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| 199.30.233.130 | — | — |
| 199.30.233.131 | — | — |
| 199.30.233.132 | dev-web02.zixcorp.com | — |
| 199.30.233.133 | — | — |
| 199.30.233.134 | dev-web04.zixcorp.com | — |
| 199.30.233.135 | dev-web05.zixcorp.com | — |
| 199.30.233.136 | dev-web06.zixcorp.com | — |
| 199.30.233.137 | dev-qs1.zixcorp.com | — |
| 199.30.233.138 | dev-cru.zixcorp.com | — |
| 199.30.233.139 | — | — |
| 199.30.233.140 | — | — |
| 199.30.233.141 | ztest-vsmtpout01.ztest.zixcorp.com | — |
| 199.30.233.142 | — | — |
| 199.30.233.143 | — | — |
| 199.30.233.144 | btest-vsmtpout01.zixcorp.com | — |
| 199.30.233.145 | — | — |
| 199.30.233.146 | — | — |
| 199.30.233.147 | mtest-outbound.zixcorp.com | — |
| 199.30.233.148 | — | — |
| 199.30.233.149 | — | — |
| 199.30.233.150 | brooklyntest-smtpout.zixcorp.com | — |
| 199.30.233.151 | mtest.zixcorp.com | — |
| 199.30.233.152 | cs.btest.zixcorp.com | — |
| 199.30.233.153 | accounts.btest.zixcorp.com | — |
| 199.30.233.154 | rpt.btest.zixcorp.com | — |
| 199.30.233.155 | cr.btest.zixcorp.com | — |
| 199.30.233.156 | wtest-rus.zixmail.net | — |
| 199.30.233.157 | mtest2.zixcorp.com | — |
| 199.30.233.158 | wtest-cru.zixcorp.com | — |
| 199.30.233.159 | wtest-crtdnld01.zixcorp.com | — |
| 199.30.233.160 | — | — |
| 199.30.233.161 | — | — |
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| 199.30.233.169 | — | — |
| 199.30.233.170 | — | — |
| 199.30.233.171 | dev-cs.zixcorp.com | — |
| 199.30.233.172 | wtest-cs.zixcorp.com | — |
| 199.30.233.173 | dev-csl.zixcorp.com | — |
| 199.30.233.174 | wtest-csl.zixcorp.com | — |
| 199.30.233.175 | wtest-gwr.zixcorp.com | — |
| 199.30.233.176 | dev-perf-crtdnld01.zixcorp.com | — |
| 199.30.233.177 | dev-perf-cru.zixcorp.com | — |
| 199.30.233.178 | dev-perf-cs.zixcorp.com | — |
| 199.30.233.179 | dev-perf-csl.zixcorp.com | — |
| 199.30.233.180 | wtest-cs.zixmail.com | — |
| 199.30.233.181 | wtest-csl.zixmail.com | — |
| 199.30.233.182 | mbench.zixcorp.com | — |
| 199.30.233.183 | mbench2.zixcorp.com | — |
| 199.30.233.184 | mtest-admin.zixcorp.com | — |
| 199.30.233.185 | mtest2-admin.zixcorp.com | — |
| 199.30.233.186 | mdev.zixcorp.com | — |
| 199.30.233.187 | wtest-cru.zixmail.com | — |
| 199.30.233.188 | wtest-crtdnld01.zixmail.com | — |
| 199.30.233.189 | testlab.zixcorp.com | — |
| 199.30.233.190 | dev-loop-ui.zixcorp.com | — |
| 199.30.233.191 | — | — |
| 199.30.233.192 | — | — |
| 199.30.233.193 | wmailc-interop.zixcorp.com | — |
| 199.30.233.194 | — | — |
| 199.30.233.195 | — | — |
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| 199.30.233.197 | — | — |
| 199.30.233.198 | — | — |
| 199.30.233.199 | — | — |
| 199.30.233.200 | wtest.zixmail.net | — |
| 199.30.233.201 | — | — |
| 199.30.233.202 | — | — |
| 199.30.233.203 | dev-web03.zixcorp.com | — |
| 199.30.233.204 | — | — |
| 199.30.233.205 | — | — |
| 199.30.233.206 | — | — |
| 199.30.233.207 | — | — |
| 199.30.233.208 | dev-web08.zixcorp.com | — |
| 199.30.233.209 | dev-web09.zixcorp.com | — |
| 199.30.233.210 | — | — |
| 199.30.233.211 | inbound.dev.zixcorp.com | — |
| 199.30.233.212 | inbound2.dev.zixcorp.com | — |
| 199.30.233.213 | inbound3.dev.zixcorp.com | — |
| 199.30.233.214 | dev-web12.zixcorp.com | — |
| 199.30.233.215 | inbound4.dev.zixcorp.com | — |
| 199.30.233.216 | dev-rus.zixcorp.com | — |
| 199.30.233.217 | dev-crtdnld01.zixcorp.com | — |
| 199.30.233.218 | dev-web07.zixcorp.com | — |
| 199.30.233.219 | dev-web01.zixcorp.com | — |
| 199.30.233.220 | star.zhd.zixhosted.com | — |
| 199.30.233.221 | — | — |
| 199.30.233.222 | zhd-encrouter01.zhd.zixhosted.com | Yes |
| 199.30.233.223 | zhd-encrouter02.zhd.zixhosted.com | Yes |
| 199.30.233.224 | enc21.dev.dallas.zixhosted.com | — |
| 199.30.233.225 | enc22.dev.dallas.zixhosted.com | — |
| 199.30.233.226 | — | — |
| 199.30.233.227 | zht-encrouter01.zht.zixhosted.com | Yes |
| 199.30.233.228 | zht-encrouter02.zht.zixhosted.com | Yes |
| 199.30.233.229 | zht-encrouter03.zht.zixhosted.com | Yes |
| 199.30.233.230 | zht-encrouter04.zht.zixhosted.com | Yes |
| 199.30.233.231 | zht-decrouter01.zht.zixhosted.com | Yes |
| 199.30.233.232 | zht-decrouter02.zht.zixhosted.com | Yes |
| 199.30.233.233 | zht-decrouter03.zht.zixhosted.com | Yes |
| 199.30.233.234 | zht-decrouter04.zht.zixhosted.com | Yes |
| 199.30.233.235 | star.zht.zixhosted.com | — |
| 199.30.233.236 | — | — |
| 199.30.233.237 | — | — |
| 199.30.233.238 | — | — |
| 199.30.233.239 | — | — |
| 199.30.233.240 | devsmbhosted.com | — |
| 199.30.233.241 | — | — |
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| 199.30.233.246 | — | — |
| 199.30.233.247 | — | — |
| 199.30.233.248 | dev-acme08.zixcorp.com | — |
| 199.30.233.249 | — | — |
| 199.30.233.250 | — | — |
| 199.30.233.251 | — | — |
| 199.30.233.252 | — | — |
| 199.30.233.253 | — | — |
| 199.30.233.254 | zixtestdashboard.com | — |
| 199.30.233.255 | — | — |