| 204.62.114.0 | — | — |
| 204.62.114.1 | gateway.sc-chi-border.37signals.com | Yes |
| 204.62.114.2 | — | — |
| 204.62.114.3 | — | — |
| 204.62.114.4 | — | — |
| 204.62.114.5 | — | — |
| 204.62.114.6 | virt-gw.sc-chi.37signals.com | — |
| 204.62.114.7 | — | — |
| 204.62.114.8 | — | — |
| 204.62.114.9 | — | — |
| 204.62.114.10 | — | — |
| 204.62.114.11 | — | — |
| 204.62.114.12 | — | — |
| 204.62.114.13 | mail-relay-01.backpackit.com | — |
| 204.62.114.14 | mail-relay-02.backpackit.com | — |
| 204.62.114.15 | mail-relay-03.backpackit.com | — |
| 204.62.114.16 | mail-relay-04.backpackit.com | — |
| 204.62.114.17 | mail-relay-05.backpackit.com | — |
| 204.62.114.18 | mail-relay-01.basecamphq.com | — |
| 204.62.114.19 | mail-relay-02.basecamphq.com | — |
| 204.62.114.20 | mail-relay-03.basecamphq.com | — |
| 204.62.114.21 | mail-relay-04.basecamphq.com | — |
| 204.62.114.22 | mail-relay-05.basecamphq.com | — |
| 204.62.114.23 | mail-relay-01.campfirenow.com | — |
| 204.62.114.24 | mail-relay-02.campfirenow.com | — |
| 204.62.114.25 | mail-relay-03.campfirenow.com | — |
| 204.62.114.26 | mail-relay-04.campfirenow.com | — |
| 204.62.114.27 | mail-relay-05.campfirenow.com | — |
| 204.62.114.28 | mail-relay-01.highrisehq.com | — |
| 204.62.114.29 | mail-relay-02.highrisehq.com | — |
| 204.62.114.30 | mail-relay-03.highrisehq.com | — |
| 204.62.114.31 | mail-relay-04.highrisehq.com | — |
| 204.62.114.32 | mail-relay-05.highrisehq.com | — |
| 204.62.114.33 | mail-relay-01.writeboard.com | — |
| 204.62.114.34 | mail-relay-02.writeboard.com | — |
| 204.62.114.35 | mail-relay-03.writeboard.com | — |
| 204.62.114.36 | mail-relay-04.writeboard.com | — |
| 204.62.114.37 | mail-relay-01.3.basecamp.com | — |
| 204.62.114.38 | mail-relay-02.3.basecamp.com | — |
| 204.62.114.39 | mail-relay-03.3.basecamp.com | — |
| 204.62.114.40 | mail-relay-05.writeboard.com | — |
| 204.62.114.41 | — | — |
| 204.62.114.42 | — | — |
| 204.62.114.43 | — | — |
| 204.62.114.44 | — | — |
| 204.62.114.45 | — | — |
| 204.62.114.46 | — | — |
| 204.62.114.47 | — | — |
| 204.62.114.48 | — | — |
| 204.62.114.49 | — | — |
| 204.62.114.50 | — | — |
| 204.62.114.51 | — | — |
| 204.62.114.52 | — | — |
| 204.62.114.53 | staging-mail-relay-01.bcx-staging.com | — |
| 204.62.114.54 | staging-mail-relay-02.bcx-staging.com | — |
| 204.62.114.55 | — | — |
| 204.62.114.56 | — | — |
| 204.62.114.57 | — | — |
| 204.62.114.58 | — | — |
| 204.62.114.59 | — | — |
| 204.62.114.60 | — | — |
| 204.62.114.61 | — | — |
| 204.62.114.62 | — | — |
| 204.62.114.63 | — | — |
| 204.62.114.64 | — | — |
| 204.62.114.65 | — | — |
| 204.62.114.66 | highrisehq.com | — |
| 204.62.114.67 | campfirenow.com | — |
| 204.62.114.68 | mail-relay-01.basecamphq.com | — |
| 204.62.114.69 | mail-relay-02.basecamphq.com | — |
| 204.62.114.70 | mail-relay-03.basecamphq.com | — |
| 204.62.114.71 | mail-relay-04.basecamphq.com | — |
| 204.62.114.72 | mail-relay-05.basecamphq.com | — |
| 204.62.114.73 | — | — |
| 204.62.114.74 | — | — |
| 204.62.114.75 | — | — |
| 204.62.114.76 | — | — |
| 204.62.114.77 | — | — |
| 204.62.114.78 | — | — |
| 204.62.114.79 | — | — |
| 204.62.114.80 | — | — |
| 204.62.114.81 | — | — |
| 204.62.114.82 | — | — |
| 204.62.114.83 | — | — |
| 204.62.114.84 | — | — |
| 204.62.114.85 | — | — |
| 204.62.114.86 | — | — |
| 204.62.114.87 | — | — |
| 204.62.114.88 | — | — |
| 204.62.114.89 | — | — |
| 204.62.114.90 | mail-relay-01.basecamp.com | — |
| 204.62.114.91 | — | — |
| 204.62.114.92 | mail-relay-02.basecamp.com | — |
| 204.62.114.93 | — | — |
| 204.62.114.94 | mail-relay-03.basecamp.com | — |
| 204.62.114.95 | — | — |
| 204.62.114.96 | basecamp.com | — |
| 204.62.114.97 | — | — |
| 204.62.114.98 | — | — |
| 204.62.114.99 | — | — |
| 204.62.114.100 | — | — |
| 204.62.114.101 | — | — |
| 204.62.114.102 | mail-relay-04.basecamp.com | — |
| 204.62.114.103 | mail-relay-04.3.basecamp.com | — |
| 204.62.114.104 | — | — |
| 204.62.114.105 | mail-relay-05.basecamp.com | — |
| 204.62.114.106 | mail-relay-05.3.basecamp.com | — |
| 204.62.114.107 | — | — |
| 204.62.114.108 | beta1.37img.com | — |
| 204.62.114.109 | — | — |
| 204.62.114.110 | — | — |
| 204.62.114.111 | — | — |
| 204.62.114.112 | — | — |
| 204.62.114.113 | — | — |
| 204.62.114.114 | — | — |
| 204.62.114.115 | — | — |
| 204.62.114.116 | signalvnoise.com | — |
| 204.62.114.117 | thedistance.com | — |
| 204.62.114.118 | 3.basecamp.com | — |
| 204.62.114.119 | — | — |
| 204.62.114.120 | origin.basecamp-static.com | — |
| 204.62.114.121 | — | — |
| 204.62.114.122 | — | — |
| 204.62.114.123 | — | — |
| 204.62.114.124 | — | — |
| 204.62.114.125 | — | — |
| 204.62.114.126 | — | — |
| 204.62.114.127 | — | — |
| 204.62.114.128 | — | — |
| 204.62.114.129 | — | — |
| 204.62.114.130 | 01a.forward.hey.com | — |
| 204.62.114.131 | 01b.forward.hey.com | — |
| 204.62.114.132 | 02a.forward.hey.com | — |
| 204.62.114.133 | 02b.forward.hey.com | — |
| 204.62.114.134 | 01a.trial.hey.com | — |
| 204.62.114.135 | 01b.trial.hey.com | — |
| 204.62.114.136 | 01c.trial.hey.com | — |
| 204.62.114.137 | 01d.trial.hey.com | — |
| 204.62.114.138 | 01a.hosted.hey.com | — |
| 204.62.114.139 | 01b.hosted.hey.com | — |
| 204.62.114.140 | 02a.hosted.hey.com | — |
| 204.62.114.141 | 02b.hosted.hey.com | — |
| 204.62.114.142 | 01a.world.hey.com | — |
| 204.62.114.143 | 01b.world.hey.com | — |
| 204.62.114.144 | 02a.world.hey.com | — |
| 204.62.114.145 | 02b.world.hey.com | — |
| 204.62.114.146 | mail-relay-05.basecamp.com | — |
| 204.62.114.147 | mail-relay-05.basecamp.com | — |
| 204.62.114.148 | 01a.s.hey.com | — |
| 204.62.114.149 | 01a.fs.hey.com | — |
| 204.62.114.150 | — | — |
| 204.62.114.151 | — | — |
| 204.62.114.152 | — | — |
| 204.62.114.153 | — | — |
| 204.62.114.154 | — | — |
| 204.62.114.155 | work-mx.app.hey.com | — |
| 204.62.114.156 | home-mx.app.hey.com | — |
| 204.62.114.157 | — | — |
| 204.62.114.158 | — | — |
| 204.62.114.159 | — | — |
| 204.62.114.160 | — | — |
| 204.62.114.161 | — | — |
| 204.62.114.162 | — | — |
| 204.62.114.163 | — | — |
| 204.62.114.164 | pmm.37signals.com | — |
| 204.62.114.165 | pmm-staging.37signals.com | — |
| 204.62.114.166 | — | — |
| 204.62.114.167 | home-mx.app.hey-staging.com | — |
| 204.62.114.168 | work-mx.app.hey-staging.com | — |
| 204.62.114.169 | — | — |
| 204.62.114.170 | — | — |
| 204.62.114.171 | — | — |
| 204.62.114.172 | — | — |
| 204.62.114.173 | — | — |
| 204.62.114.174 | wildcard.basecamphq.com | — |
| 204.62.114.175 | mx2.basecamphq.com | — |
| 204.62.114.176 | progress.basecamp.com | — |
| 204.62.114.177 | search.basecamp.com | — |
| 204.62.114.178 | dash.37signals.com | — |
| 204.62.114.179 | 37signals.com | — |
| 204.62.114.180 | basecamp.com | — |
| 204.62.114.181 | — | — |
| 204.62.114.182 | wildcard.backpackit.com | — |
| 204.62.114.183 | gopher.hey-staging.com | — |
| 204.62.114.184 | gopher.hey-staging.com | — |
| 204.62.114.185 | wildcard.highrisehq.com | — |
| 204.62.114.186 | mx.highrisehq.com | — |
| 204.62.114.187 | — | — |
| 204.62.114.188 | wildcard.basecamphq.com | — |
| 204.62.114.189 | wildcard.clientsection.com | — |
| 204.62.114.190 | mx1.highrise-staging.com | — |
| 204.62.114.191 | wildcard.highrisemail.com | — |
| 204.62.114.192 | mx.backpack-staging.com | — |
| 204.62.114.193 | wildcard.updatelog.com | — |
| 204.62.114.194 | wildcard.highrisehq.com | — |
| 204.62.114.195 | static.highrisehq.com | — |
| 204.62.114.196 | integrate.37signals.com | — |
| 204.62.114.197 | — | — |
| 204.62.114.198 | — | — |
| 204.62.114.199 | breeze123.com | — |
| 204.62.114.200 | — | — |
| 204.62.114.201 | 37img.com | — |
| 204.62.114.202 | jobs.37signals.com | — |
| 204.62.114.203 | billing.37signals.com | — |
| 204.62.114.204 | wildcard.suites.37signals.com | — |
| 204.62.114.205 | — | — |
| 204.62.114.206 | asset1.basecamp.com | — |
| 204.62.114.207 | launchpad-beta.37signals.com | — |
| 204.62.114.208 | beta-poll.campfirenow.com | — |
| 204.62.114.209 | mx2.basecamp-staging.com | — |
| 204.62.114.210 | app-mx.37signals.com | — |
| 204.62.114.211 | mx1.basecamp.com | — |
| 204.62.114.212 | mx.backpackit.com | — |
| 204.62.114.213 | — | — |
| 204.62.114.214 | — | — |
| 204.62.114.215 | — | — |
| 204.62.114.216 | www.basecamp-staging.com | — |
| 204.62.114.217 | — | — |
| 204.62.114.218 | — | — |
| 204.62.114.219 | mx1.bcx-staging.com | — |
| 204.62.114.220 | gateway.sc-chi.37signals.com | Yes |
| 204.62.114.221 | — | — |
| 204.62.114.222 | — | — |
| 204.62.114.223 | — | — |
| 204.62.114.224 | 01a.relay.hey.com | — |
| 204.62.114.225 | 01b.relay.hey.com | — |
| 204.62.114.226 | 01c.relay.hey.com | — |
| 204.62.114.227 | 01d.relay.hey.com | — |
| 204.62.114.228 | 02a.relay.hey.com | — |
| 204.62.114.229 | 02b.relay.hey.com | — |
| 204.62.114.230 | 02c.relay.hey.com | — |
| 204.62.114.231 | 02d.relay.hey.com | — |
| 204.62.114.232 | 01a.relay.hey-staging.com | — |
| 204.62.114.233 | 01b.relay.hey-staging.com | — |
| 204.62.114.234 | 02a.relay.hey-staging.com | — |
| 204.62.114.235 | 02b.relay.hey-staging.com | — |
| 204.62.114.236 | — | — |
| 204.62.114.237 | gopher.hey.com | — |
| 204.62.114.238 | gopher.hey.com | — |
| 204.62.114.239 | gopher.hey.com | — |
| 204.62.114.240 | gopher.hey.com | — |
| 204.62.114.241 | outbound-mail-01.basecamp.com | — |
| 204.62.114.242 | outbound-mail-02.basecamp.com | — |
| 204.62.114.243 | outbound-mail-03.basecamp.com | — |
| 204.62.114.244 | outbound-mail-04.basecamp.com | — |
| 204.62.114.245 | outbound-mail-05.basecamp.com | — |
| 204.62.114.246 | outbound-mail-06.basecamp.com | — |
| 204.62.114.247 | virt-gw.sc-chi.basecamp.com | — |
| 204.62.114.248 | virt-gw.sc-chi.basecamp.com | — |
| 204.62.114.249 | ip-249-114-62-204.37signals.com | — |
| 204.62.114.250 | ip-250-114-62-204.37signals.com | — |
| 204.62.114.251 | ip-251-114-62-204.37signals.com | — |
| 204.62.114.252 | — | — |
| 204.62.114.253 | — | — |
| 204.62.114.254 | — | — |
| 204.62.114.255 | — | — |