Summary
| ASN | AS104 University of Colorado at Boulder |
| BGP | 128.138.0.0/16 |
| IPs with RDNS | 223 |
| Hosted Domains | 0 |
| Pingable IPs | 0 |
| Router IPs | 0 |
| 128.138.221.0 | — | 0 |  | |
| 128.138.221.1 | econ-gw-atls.colorado.edu | 0 | | |
| 128.138.221.2 | — | 0 | | |
| 128.138.221.3 | — | 0 | | |
| 128.138.221.4 | — | 0 | | |
| 128.138.221.5 | ucb-atls-100.colorado.edu | 0 | | |
| 128.138.221.6 | — | 0 | | |
| 128.138.221.7 | atls221-7.colorado.edu | 0 | | |
| 128.138.221.8 | atls221-8.colorado.edu | 0 | | |
| 128.138.221.9 | atls221-9.colorado.edu | 0 | | |
| 128.138.221.10 | atls221-10.colorado.edu | 0 | | |
| 128.138.221.11 | atls221-11.colorado.edu | 0 | | |
| 128.138.221.12 | — | 0 | | |
| 128.138.221.13 | atls221-13.colorado.edu | 0 | | |
| 128.138.221.14 | lpc.colorado.edu | 0 | | |
| 128.138.221.15 | atls221-15.colorado.edu | 0 | | |
| 128.138.221.16 | atls221-16.colorado.edu | 0 | | |
| 128.138.221.17 | atls221-17.colorado.edu | 0 | | |
| 128.138.221.18 | atls221-18.colorado.edu | 0 | | |
| 128.138.221.19 | atls221-19.colorado.edu | 0 | | |
| 128.138.221.20 | cu-atlas-221-20.colorado.edu | 0 | | |
| 128.138.221.21 | atls221-21.colorado.edu | 0 | | |
| 128.138.221.22 | atlas-221-22.colorado.edu | 0 | | |
| 128.138.221.23 | atls-2b32srvr2.colorado.edu | 0 | | |
| 128.138.221.24 | atls-2b32crestron.colorado.edu | 0 | | |
| 128.138.221.25 | atls-1b25.colorado.edu | 0 | | |
| 128.138.221.26 | atls-1b29.colorado.edu | 0 | | |
| 128.138.221.27 | atls-1b31.colorado.edu | 0 | | |
| 128.138.221.28 | atls-1b31a.colorado.edu | 0 | | |
| 128.138.221.29 | shapiro-atlas-office.colorado.edu | 0 | | |
| 128.138.221.30 | atls221-30.colorado.edu | 0 | | |
| 128.138.221.31 | atls-cr100-kiosk3.colorado.edu | 0 | | |
| 128.138.221.32 | atls221-32.colorado.edu | 0 | | |
| 128.138.221.33 | atls221-33.colorado.edu | 0 | | |
| 128.138.221.34 | canonmaxify5020.colorado.edu | 0 | | |
| 128.138.221.35 | atls221-35.colorado.edu | 0 | | |
| 128.138.221.36 | atls-100a-crestron.colorado.edu | 0 | | |
| 128.138.221.37 | atlsgradprinter.colorado.edu | 0 | | |
| 128.138.221.38 | atls-101-polycom.colorado.edu | 0 | | |
| 128.138.221.39 | atls221-39.colorado.edu | 0 | | |
| 128.138.221.40 | atls221-40.colorado.edu | 0 | | |
| 128.138.221.41 | atls221-41.colorado.edu | 0 | | |
| 128.138.221.42 | atls221-42.colorado.edu | 0 | | |
| 128.138.221.43 | atls-202.colorado.edu | 0 | | |
| 128.138.221.44 | atls-229-brdrm.colorado.edu | 0 | | |
| 128.138.221.45 | atls-rm229.colorado.edu | 0 | | |
| 128.138.221.46 | atlas-film-p1.colorado.edu | 0 | | |
| 128.138.221.47 | cu-atlas-221-47.colorado.edu | 0 | | |
| 128.138.221.48 | cucommunitystream.colorado.edu | 0 | | |
| 128.138.221.49 | jour-p-012.colorado.edu | 0 | | |
| 128.138.221.50 | cu-atlas-221-50.colorado.edu | 0 | | |
| 128.138.221.51 | cu-atlas-221-51.colorado.edu | 0 | | |
| 128.138.221.52 | atlas-p-226.colorado.edu | 0 | | |
| 128.138.221.53 | cu-atlas-221-53.colorado.edu | 0 | | |
| 128.138.221.54 | atls221-54.colorado.edu | 0 | | |
| 128.138.221.55 | atlas-p-001.colorado.edu | 0 | | |
| 128.138.221.56 | atls-commons-bw1.colorado.edu | 0 | | |
| 128.138.221.57 | atls-commons-color.colorado.edu | 0 | | |
| 128.138.221.58 | cu-atlas-221-58.colorado.edu | 0 | | |
| 128.138.221.59 | atlas-dmx59.colorado.edu | 0 | | |
| 128.138.221.60 | atlaslighttowercam.colorado.edu | 0 | | |
| 128.138.221.61 | atlaslighttowerpi.colorado.edu | 0 | | |
| 128.138.221.62 | atlas-p-004.colorado.edu | 0 | | |
| 128.138.221.63 | az.colorado.edu | 0 | | |
| 128.138.221.64 | — | 0 | | |
| 128.138.221.65 | — | 0 | | |
| 128.138.221.66 | — | 0 | | |
| 128.138.221.67 | — | 0 | | |
| 128.138.221.68 | — | 0 | | |
| 128.138.221.69 | — | 0 | | |
| 128.138.221.70 | — | 0 | | |
| 128.138.221.71 | — | 0 | | |
| 128.138.221.72 | — | 0 | | |
| 128.138.221.73 | — | 0 | | |
| 128.138.221.74 | — | 0 | | |
| 128.138.221.75 | — | 0 | | |
| 128.138.221.76 | — | 0 | | |
| 128.138.221.77 | — | 0 | | |
| 128.138.221.78 | — | 0 | | |
| 128.138.221.79 | — | 0 | | |
| 128.138.221.80 | — | 0 | | |
| 128.138.221.81 | — | 0 | | |
| 128.138.221.82 | — | 0 | | |
| 128.138.221.83 | — | 0 | | |
| 128.138.221.84 | — | 0 | | |
| 128.138.221.85 | — | 0 | | |
| 128.138.221.86 | atls221-86.colorado.edu | 0 | | |
| 128.138.221.87 | — | 0 | | |
| 128.138.221.88 | — | 0 | | |
| 128.138.221.89 | atls221-89.colorado.edu | 0 | | |
| 128.138.221.90 | hpab56ad.colorado.edu | 0 | | |
| 128.138.221.91 | — | 0 | | |
| 128.138.221.92 | — | 0 | | |
| 128.138.221.93 | atls221-93.colorado.edu | 0 | | |
| 128.138.221.94 | cu-atlas-128.138.221.94.colorado.edu | 0 | | |
| 128.138.221.95 | cu-atlas-128.138.221.95.colorado.edu | 0 | | |
| 128.138.221.96 | cu-atlas-128.138.221.96.colorado.edu | 0 | | |
| 128.138.221.97 | cu-atlas-128.138.221.97.colorado.edu | 0 | | |
| 128.138.221.98 | cu-atlas-128.138.221.98.colorado.edu | 0 | | |
| 128.138.221.99 | cu-atlas-128.138.221.99.colorado.edu | 0 | | |
| 128.138.221.100 | cu-atlas-128.138.221.100.colorado.edu | 0 | | |
| 128.138.221.101 | cu-atlas-128.138.221.101.colorado.edu | 0 | | |
| 128.138.221.102 | cu-atlas-128.138.221.102.colorado.edu | 0 | | |
| 128.138.221.103 | cu-atlas-128.138.221.103.colorado.edu | 0 | | |
| 128.138.221.104 | cu-atlas-128.138.221.104.colorado.edu | 0 | | |
| 128.138.221.105 | cu-atlas-128.138.221.105.colorado.edu | 0 | | |
| 128.138.221.106 | cu-atlas-128.138.221.106.colorado.edu | 0 | | |
| 128.138.221.107 | cu-atlas-128.138.221.107.colorado.edu | 0 | | |
| 128.138.221.108 | cu-atlas-128.138.221.108.colorado.edu | 0 | | |
| 128.138.221.109 | cu-atlas-128.138.221.109.colorado.edu | 0 | | |
| 128.138.221.110 | cu-atlas-128.138.221.110.colorado.edu | 0 | | |
| 128.138.221.111 | cu-atlas-128.138.221.111.colorado.edu | 0 | | |
| 128.138.221.112 | cu-atlas-128.138.221.112.colorado.edu | 0 | | |
| 128.138.221.113 | cu-atlas-128.138.221.113.colorado.edu | 0 | | |
| 128.138.221.114 | cu-atlas-128.138.221.114.colorado.edu | 0 | | |
| 128.138.221.115 | cu-atlas-128.138.221.115.colorado.edu | 0 | | |
| 128.138.221.116 | cu-atlas-128.138.221.116.colorado.edu | 0 | | |
| 128.138.221.117 | cu-atlas-128.138.221.117.colorado.edu | 0 | | |
| 128.138.221.118 | cu-atlas-128.138.221.118.colorado.edu | 0 | | |
| 128.138.221.119 | cu-atlas-128.138.221.119.colorado.edu | 0 | | |
| 128.138.221.120 | cu-atlas-128.138.221.120.colorado.edu | 0 | | |
| 128.138.221.121 | cu-atlas-128.138.221.121.colorado.edu | 0 | | |
| 128.138.221.122 | cu-atlas-128.138.221.122.colorado.edu | 0 | | |
| 128.138.221.123 | cu-atlas-128.138.221.123.colorado.edu | 0 | | |
| 128.138.221.124 | cu-atlas-128.138.221.124.colorado.edu | 0 | | |
| 128.138.221.125 | cu-atlas-128.138.221.125.colorado.edu | 0 | | |
| 128.138.221.126 | cu-atlas-128.138.221.126.colorado.edu | 0 | | |
| 128.138.221.127 | cu-atlas-128.138.221.127.colorado.edu | 0 | | |
| 128.138.221.128 | cu-atlas-128.138.221.128.colorado.edu | 0 | | |
| 128.138.221.129 | cu-atlas-128.138.221.129.colorado.edu | 0 | | |
| 128.138.221.130 | cu-atlas-128.138.221.130.colorado.edu | 0 | | |
| 128.138.221.131 | cu-atlas-128.138.221.131.colorado.edu | 0 | | |
| 128.138.221.132 | cu-atlas-128.138.221.132.colorado.edu | 0 | | |
| 128.138.221.133 | cu-atlas-128.138.221.133.colorado.edu | 0 | | |
| 128.138.221.134 | cu-atlas-128.138.221.134.colorado.edu | 0 | | |
| 128.138.221.135 | cu-atlas-128.138.221.135.colorado.edu | 0 | | |
| 128.138.221.136 | cu-atlas-128.138.221.136.colorado.edu | 0 | | |
| 128.138.221.137 | cu-atlas-128.138.221.137.colorado.edu | 0 | | |
| 128.138.221.138 | cu-atlas-128.138.221.138.colorado.edu | 0 | | |
| 128.138.221.139 | cu-atlas-128.138.221.139.colorado.edu | 0 | | |
| 128.138.221.140 | cu-atlas-128.138.221.140.colorado.edu | 0 | | |
| 128.138.221.141 | cu-atlas-128.138.221.141.colorado.edu | 0 | | |
| 128.138.221.142 | cu-atlas-128.138.221.142.colorado.edu | 0 | | |
| 128.138.221.143 | cu-atlas-128.138.221.143.colorado.edu | 0 | | |
| 128.138.221.144 | cu-atlas-128.138.221.144.colorado.edu | 0 | | |
| 128.138.221.145 | cu-atlas-128.138.221.145.colorado.edu | 0 | | |
| 128.138.221.146 | cu-atlas-128.138.221.146.colorado.edu | 0 | | |
| 128.138.221.147 | cu-atlas-128.138.221.147.colorado.edu | 0 | | |
| 128.138.221.148 | cu-atlas-128.138.221.148.colorado.edu | 0 | | |
| 128.138.221.149 | cu-atlas-128.138.221.149.colorado.edu | 0 | | |
| 128.138.221.150 | cu-atlas-128.138.221.150.colorado.edu | 0 | | |
| 128.138.221.151 | cu-atlas-128.138.221.151.colorado.edu | 0 | | |
| 128.138.221.152 | cu-atlas-128.138.221.152.colorado.edu | 0 | | |
| 128.138.221.153 | cu-atlas-128.138.221.153.colorado.edu | 0 | | |
| 128.138.221.154 | cu-atlas-128.138.221.154.colorado.edu | 0 | | |
| 128.138.221.155 | cu-atlas-128.138.221.155.colorado.edu | 0 | | |
| 128.138.221.156 | cu-atlas-128.138.221.156.colorado.edu | 0 | | |
| 128.138.221.157 | cu-atlas-128.138.221.157.colorado.edu | 0 | | |
| 128.138.221.158 | cu-atlas-128.138.221.158.colorado.edu | 0 | | |
| 128.138.221.159 | cu-atlas-128.138.221.159.colorado.edu | 0 | | |
| 128.138.221.160 | cu-atlas-128.138.221.160.colorado.edu | 0 | | |
| 128.138.221.161 | cu-atlas-128.138.221.161.colorado.edu | 0 | | |
| 128.138.221.162 | cu-atlas-128.138.221.162.colorado.edu | 0 | | |
| 128.138.221.163 | cu-atlas-128.138.221.163.colorado.edu | 0 | | |
| 128.138.221.164 | cu-atlas-128.138.221.164.colorado.edu | 0 | | |
| 128.138.221.165 | cu-atlas-128.138.221.165.colorado.edu | 0 | | |
| 128.138.221.166 | cu-atlas-128.138.221.166.colorado.edu | 0 | | |
| 128.138.221.167 | cu-atlas-128.138.221.167.colorado.edu | 0 | | |
| 128.138.221.168 | cu-atlas-128.138.221.168.colorado.edu | 0 | | |
| 128.138.221.169 | cu-atlas-128.138.221.169.colorado.edu | 0 | | |
| 128.138.221.170 | cu-atlas-128.138.221.170.colorado.edu | 0 | | |
| 128.138.221.171 | cu-atlas-128.138.221.171.colorado.edu | 0 | | |
| 128.138.221.172 | cu-atlas-128.138.221.172.colorado.edu | 0 | | |
| 128.138.221.173 | cu-atlas-128.138.221.173.colorado.edu | 0 | | |
| 128.138.221.174 | cu-atlas-128.138.221.174.colorado.edu | 0 | | |
| 128.138.221.175 | cu-atlas-128.138.221.175.colorado.edu | 0 | | |
| 128.138.221.176 | cu-atlas-128.138.221.176.colorado.edu | 0 | | |
| 128.138.221.177 | cu-atlas-128.138.221.177.colorado.edu | 0 | | |
| 128.138.221.178 | cu-atlas-128.138.221.178.colorado.edu | 0 | | |
| 128.138.221.179 | cu-atlas-128.138.221.179.colorado.edu | 0 | | |
| 128.138.221.180 | cu-atlas-128.138.221.180.colorado.edu | 0 | | |
| 128.138.221.181 | cu-atlas-128.138.221.181.colorado.edu | 0 | | |
| 128.138.221.182 | cu-atlas-128.138.221.182.colorado.edu | 0 | | |
| 128.138.221.183 | cu-atlas-128.138.221.183.colorado.edu | 0 | | |
| 128.138.221.184 | cu-atlas-128.138.221.184.colorado.edu | 0 | | |
| 128.138.221.185 | cu-atlas-128.138.221.185.colorado.edu | 0 | | |
| 128.138.221.186 | cu-atlas-128.138.221.186.colorado.edu | 0 | | |
| 128.138.221.187 | cu-atlas-128.138.221.187.colorado.edu | 0 | | |
| 128.138.221.188 | cu-atlas-128.138.221.188.colorado.edu | 0 | | |
| 128.138.221.189 | cu-atlas-128.138.221.189.colorado.edu | 0 | | |
| 128.138.221.190 | cu-atlas-128.138.221.190.colorado.edu | 0 | | |
| 128.138.221.191 | cu-atlas-128.138.221.191.colorado.edu | 0 | | |
| 128.138.221.192 | cu-atlas-128.138.221.192.colorado.edu | 0 | | |
| 128.138.221.193 | cu-atlas-128.138.221.193.colorado.edu | 0 | | |
| 128.138.221.194 | cu-atlas-128.138.221.194.colorado.edu | 0 | | |
| 128.138.221.195 | cu-atlas-128.138.221.195.colorado.edu | 0 | | |
| 128.138.221.196 | cu-atlas-128.138.221.196.colorado.edu | 0 | | |
| 128.138.221.197 | cu-atlas-128.138.221.197.colorado.edu | 0 | | |
| 128.138.221.198 | cu-atlas-128.138.221.198.colorado.edu | 0 | | |
| 128.138.221.199 | cu-atlas-128.138.221.199.colorado.edu | 0 | | |
| 128.138.221.200 | cu-atlas-128.138.221.200.colorado.edu | 0 | | |
| 128.138.221.201 | cu-atlas-128.138.221.201.colorado.edu | 0 | | |
| 128.138.221.202 | cu-atlas-128.138.221.202.colorado.edu | 0 | | |
| 128.138.221.203 | cu-atlas-128.138.221.203.colorado.edu | 0 | | |
| 128.138.221.204 | cu-atlas-128.138.221.204.colorado.edu | 0 | | |
| 128.138.221.205 | cu-atlas-128.138.221.205.colorado.edu | 0 | | |
| 128.138.221.206 | cu-atlas-128.138.221.206.colorado.edu | 0 | | |
| 128.138.221.207 | cu-atlas-128.138.221.207.colorado.edu | 0 | | |
| 128.138.221.208 | cu-atlas-128.138.221.208.colorado.edu | 0 | | |
| 128.138.221.209 | cu-atlas-128.138.221.209.colorado.edu | 0 | | |
| 128.138.221.210 | cu-atlas-128.138.221.210.colorado.edu | 0 | | |
| 128.138.221.211 | cu-atlas-128.138.221.211.colorado.edu | 0 | | |
| 128.138.221.212 | cu-atlas-128.138.221.212.colorado.edu | 0 | | |
| 128.138.221.213 | cu-atlas-128.138.221.213.colorado.edu | 0 | | |
| 128.138.221.214 | cu-atlas-128.138.221.214.colorado.edu | 0 | | |
| 128.138.221.215 | cu-atlas-128.138.221.215.colorado.edu | 0 | | |
| 128.138.221.216 | cu-atlas-128.138.221.216.colorado.edu | 0 | | |
| 128.138.221.217 | cu-atlas-128.138.221.217.colorado.edu | 0 | | |
| 128.138.221.218 | cu-atlas-128.138.221.218.colorado.edu | 0 | | |
| 128.138.221.219 | cu-atlas-128.138.221.219.colorado.edu | 0 | | |
| 128.138.221.220 | cu-atlas-128.138.221.220.colorado.edu | 0 | | |
| 128.138.221.221 | cu-atlas-128.138.221.221.colorado.edu | 0 | | |
| 128.138.221.222 | cu-atlas-128.138.221.222.colorado.edu | 0 | | |
| 128.138.221.223 | cu-atlas-128.138.221.223.colorado.edu | 0 | | |
| 128.138.221.224 | cu-atlas-128.138.221.224.colorado.edu | 0 | | |
| 128.138.221.225 | cu-atlas-128.138.221.225.colorado.edu | 0 | | |
| 128.138.221.226 | cu-atlas-128.138.221.226.colorado.edu | 0 | | |
| 128.138.221.227 | cu-atlas-128.138.221.227.colorado.edu | 0 | | |
| 128.138.221.228 | cu-atlas-128.138.221.228.colorado.edu | 0 | | |
| 128.138.221.229 | cu-atlas-128.138.221.229.colorado.edu | 0 | | |
| 128.138.221.230 | cu-atlas-128.138.221.230.colorado.edu | 0 | | |
| 128.138.221.231 | cu-atlas-128.138.221.231.colorado.edu | 0 | | |
| 128.138.221.232 | cu-atlas-128.138.221.232.colorado.edu | 0 | | |
| 128.138.221.233 | cu-atlas-128.138.221.233.colorado.edu | 0 | | |
| 128.138.221.234 | cu-atlas-128.138.221.234.colorado.edu | 0 | | |
| 128.138.221.235 | cu-atlas-128.138.221.235.colorado.edu | 0 | | |
| 128.138.221.236 | cu-atlas-128.138.221.236.colorado.edu | 0 | | |
| 128.138.221.237 | cu-atlas-128.138.221.237.colorado.edu | 0 | | |
| 128.138.221.238 | cu-atlas-128.138.221.238.colorado.edu | 0 | | |
| 128.138.221.239 | cu-atlas-128.138.221.239.colorado.edu | 0 | | |
| 128.138.221.240 | cu-atlas-128.138.221.240.colorado.edu | 0 | | |
| 128.138.221.241 | cu-atlas-128.138.221.241.colorado.edu | 0 | | |
| 128.138.221.242 | cu-atlas-128.138.221.242.colorado.edu | 0 | | |
| 128.138.221.243 | cu-atlas-128.138.221.243.colorado.edu | 0 | | |
| 128.138.221.244 | cu-atlas-128.138.221.244.colorado.edu | 0 | | |
| 128.138.221.245 | cu-atlas-128.138.221.245.colorado.edu | 0 | | |
| 128.138.221.246 | cu-atlas-128.138.221.246.colorado.edu | 0 | | |
| 128.138.221.247 | cu-atlas-128.138.221.247.colorado.edu | 0 | | |
| 128.138.221.248 | cu-atlas-128.138.221.248.colorado.edu | 0 | | |
| 128.138.221.249 | cu-atlas-128.138.221.249.colorado.edu | 0 | | |
| 128.138.221.250 | cu-atlas-128.138.221.250.colorado.edu | 0 | | |
| 128.138.221.251 | cu-atlas-128.138.221.251.colorado.edu | 0 | | |
| 128.138.221.252 | cu-atlas-128.138.221.252.colorado.edu | 0 | | |
| 128.138.221.253 | cu-atlas-128.138.221.253.colorado.edu | 0 | | |
| 128.138.221.254 | cu-atlas-128.138.221.254.colorado.edu | 0 | | |
| 128.138.221.255 | — | 0 | | |
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
$
traceroute -a -n -q1 -m8 128.138.221.184
traceroute to 128.138.221.184 (128.138.221.184): 8 hops max, 52 byte packets
2 *
6 *
7 *
8 *
Measurement taken from 
IPinfo ProbeNet in Los Angeles, US
IPinfo ProbeNet in Los Angeles, USOn