Summary
| ASN | AS104 University of Colorado at Boulder |
| BGP | 128.138.0.0/16 |
| IPs with RDNS | 231 |
| Hosted Domains | 0 |
| Pingable IPs | 1 |
| Router IPs | 0 |
| 128.138.227.0 | — | 0 |  | |
| 128.138.227.1 | sll227-gw.colorado.edu | 0 | | |
| 128.138.227.2 | — | 0 | | |
| 128.138.227.3 | sll-227-3.colorado.edu | 0 | | |
| 128.138.227.4 | ccldas.colorado.edu | 0 | | |
| 128.138.227.5 | — | 0 | | |
| 128.138.227.6 | sll-227-6.colorado.edu | 0 | | |
| 128.138.227.7 | prtr-135.colorado.edu | 0 | | |
| 128.138.227.8 | prtr-238.colorado.edu | 0 | | |
| 128.138.227.9 | sll-227-9.colorado.edu | 0 | | |
| 128.138.227.10 | sll-227-10.colorado.edu | 0 | | |
| 128.138.227.11 | ccldas-scfprinter.colorado.edu | 0 | | |
| 128.138.227.12 | oscilloscope.colorado.edu | 0 | | |
| 128.138.227.13 | ccldas1.colorado.edu | 0 | | |
| 128.138.227.14 | wyld.colorado.edu | 0 | | |
| 128.138.227.15 | saha.colorado.edu | 0 | | |
| 128.138.227.16 | enceladus.colorado.edu | 0 | | |
| 128.138.227.17 | moon.colorado.edu | 0 | | |
| 128.138.227.18 | rhea.colorado.edu | 0 | | |
| 128.138.227.19 | ingenii.colorado.edu | 0 | | |
| 128.138.227.20 | encephalon.colorado.edu | 0 | | |
| 128.138.227.21 | ison.colorado.edu | 0 | | |
| 128.138.227.22 | sll227-22.colorado.edu | 0 | | |
| 128.138.227.23 | namikis.colorado.edu | 0 | | |
| 128.138.227.24 | impactdata.colorado.edu | 0 | | |
| 128.138.227.25 | sll-227-25.colorado.edu | 0 | | |
| 128.138.227.26 | sll-227-26.colorado.edu | 0 | | |
| 128.138.227.27 | cedu-sll-p-02.colorado.edu | 0 | | |
| 128.138.227.28 | suda.colorado.edu | 0 | | |
| 128.138.227.29 | — | 0 | | |
| 128.138.227.30 | — | 0 | | |
| 128.138.227.31 | — | 0 | | |
| 128.138.227.32 | — | 0 | | |
| 128.138.227.33 | dustcam.colorado.edu | 0 | | |
| 128.138.227.34 | — | 0 | | |
| 128.138.227.35 | — | 0 | | |
| 128.138.227.36 | — | 0 | | |
| 128.138.227.37 | — | 0 | | |
| 128.138.227.38 | — | 0 | | |
| 128.138.227.39 | — | 0 | | |
| 128.138.227.40 | sll-227-40.colorado.edu | 0 | | |
| 128.138.227.41 | inverness.colorado.edu | 0 | | |
| 128.138.227.42 | sll-jan-227-42.colorado.edu | 0 | | |
| 128.138.227.43 | — | 0 | | |
| 128.138.227.44 | — | 0 | | |
| 128.138.227.45 | ccldas-printer.colorado.edu | 0 | | |
| 128.138.227.46 | ccldas-control.colorado.edu | 0 | | |
| 128.138.227.47 | sll-227-47.colorado.edu | 0 | | |
| 128.138.227.48 | sll-227-48-dhcp.colorado.edu | 0 | | |
| 128.138.227.49 | — | 0 | | |
| 128.138.227.50 | — | 0 | | |
| 128.138.227.51 | — | 0 | | |
| 128.138.227.52 | — | 0 | | |
| 128.138.227.53 | — | 0 | | |
| 128.138.227.54 | — | 0 | | |
| 128.138.227.55 | sll-225-55.colorado.edu | 0 | | |
| 128.138.227.56 | sll-227-56-dhcp.colorado.edu | 0 | | |
| 128.138.227.57 | sll-227-57-dhcp.colorado.edu | 0 | | |
| 128.138.227.58 | sll-227-58-dhcp.colorado.edu | 0 | | |
| 128.138.227.59 | sll-227-59-dhcp.colorado.edu | 0 | | |
| 128.138.227.60 | sll-227-60-dhcp.colorado.edu | 0 | | |
| 128.138.227.61 | sll-227-61-dhcp.colorado.edu | 0 | | |
| 128.138.227.62 | sll-227-62-dhcp.colorado.edu | 0 | | |
| 128.138.227.63 | sll-227-63-dhcp.colorado.edu | 0 | | |
| 128.138.227.64 | sll-227-64-dhcp.colorado.edu | 0 | | |
| 128.138.227.65 | sll-227-65-dhcp.colorado.edu | 0 | | |
| 128.138.227.66 | sll-227-66-dhcp.colorado.edu | 0 | | |
| 128.138.227.67 | sll-227-67-dhcp.colorado.edu | 0 | | |
| 128.138.227.68 | sll-227-68-dhcp.colorado.edu | 0 | | |
| 128.138.227.69 | sll-227-69-dhcp.colorado.edu | 0 | | |
| 128.138.227.70 | sll-227-70-dhcp.colorado.edu | 0 | | |
| 128.138.227.71 | sll-227-71-dhcp.colorado.edu | 0 | | |
| 128.138.227.72 | sll-227-72-dhcp.colorado.edu | 0 | | |
| 128.138.227.73 | sll-227-73-dhcp.colorado.edu | 0 | | |
| 128.138.227.74 | sll-227-74-dhcp.colorado.edu | 0 | | |
| 128.138.227.75 | sll-227-75-dhcp.colorado.edu | 0 | | |
| 128.138.227.76 | sll-227-76-dhcp.colorado.edu | 0 | | |
| 128.138.227.77 | sll-227-77-dhcp.colorado.edu | 0 | | |
| 128.138.227.78 | sll-227-78-dhcp.colorado.edu | 0 | | |
| 128.138.227.79 | sll-227-79-dhcp.colorado.edu | 0 | | |
| 128.138.227.80 | sll-227-80-dhcp.colorado.edu | 0 | | |
| 128.138.227.81 | sll-227-81-dhcp.colorado.edu | 0 | | |
| 128.138.227.82 | sll-227-82-dhcp.colorado.edu | 0 | | |
| 128.138.227.83 | sll-227-83-dhcp.colorado.edu | 0 | | |
| 128.138.227.84 | sll-227-84-dhcp.colorado.edu | 0 | | |
| 128.138.227.85 | sll-227-85-dhcp.colorado.edu | 0 | | |
| 128.138.227.86 | sll-227-86-dhcp.colorado.edu | 0 | | |
| 128.138.227.87 | sll-227-87-dhcp.colorado.edu | 0 | | |
| 128.138.227.88 | sll-227-88-dhcp.colorado.edu | 0 | | |
| 128.138.227.89 | sll-227-89-dhcp.colorado.edu | 0 | | |
| 128.138.227.90 | sll-227-90-dhcp.colorado.edu | 0 | | |
| 128.138.227.91 | sll-227-91-dhcp.colorado.edu | 0 | | |
| 128.138.227.92 | sll-227-92-dhcp.colorado.edu | 0 | | |
| 128.138.227.93 | sll-227-93-dhcp.colorado.edu | 0 | | |
| 128.138.227.94 | sll-227-94-dhcp.colorado.edu | 0 | | |
| 128.138.227.95 | sll-227-95-dhcp.colorado.edu | 0 | | |
| 128.138.227.96 | sll-227-96-dhcp.colorado.edu | 0 | | |
| 128.138.227.97 | sll-227-97-dhcp.colorado.edu | 0 | | |
| 128.138.227.98 | sll-227-98-dhcp.colorado.edu | 0 | | |
| 128.138.227.99 | sll-227-99-dhcp.colorado.edu | 0 | | |
| 128.138.227.100 | sll-227-100-dhcp.colorado.edu | 0 | | |
| 128.138.227.101 | sll-227-101-dhcp.colorado.edu | 0 | | |
| 128.138.227.102 | sll-227-102-dhcp.colorado.edu | 0 | | |
| 128.138.227.103 | sll-227-103-dhcp.colorado.edu | 0 | | |
| 128.138.227.104 | sll-227-104-dhcp.colorado.edu | 0 | | |
| 128.138.227.105 | sll-227-105-dhcp.colorado.edu | 0 | | |
| 128.138.227.106 | sll-227-106-dhcp.colorado.edu | 0 | | |
| 128.138.227.107 | sll-227-107-dhcp.colorado.edu | 0 | | |
| 128.138.227.108 | sll-227-108-dhcp.colorado.edu | 0 | | |
| 128.138.227.109 | sll-227-109-dhcp.colorado.edu | 0 | | |
| 128.138.227.110 | sll-227-110-dhcp.colorado.edu | 0 | | |
| 128.138.227.111 | sll-227-111-dhcp.colorado.edu | 0 | | |
| 128.138.227.112 | sll-227-112-dhcp.colorado.edu | 0 | | |
| 128.138.227.113 | sll-227-113-dhcp.colorado.edu | 0 | | |
| 128.138.227.114 | sll-227-114-dhcp.colorado.edu | 0 | | |
| 128.138.227.115 | sll-227-115-dhcp.colorado.edu | 0 | | |
| 128.138.227.116 | sll-227-116-dhcp.colorado.edu | 0 | | |
| 128.138.227.117 | sll-227-117-dhcp.colorado.edu | 0 | | |
| 128.138.227.118 | sll-227-118-dhcp.colorado.edu | 0 | | |
| 128.138.227.119 | sll-227-119-dhcp.colorado.edu | 0 | | |
| 128.138.227.120 | sll-227-120-dhcp.colorado.edu | 0 | | |
| 128.138.227.121 | sll-227-121-dhcp.colorado.edu | 0 | | |
| 128.138.227.122 | sll-227-122-dhcp.colorado.edu | 0 | | |
| 128.138.227.123 | sll-227-123-dhcp.colorado.edu | 0 | | |
| 128.138.227.124 | sll-227-124-dhcp.colorado.edu | 0 | | |
| 128.138.227.125 | sll-227-125-dhcp.colorado.edu | 0 | | |
| 128.138.227.126 | sll-227-126-dhcp.colorado.edu | 0 | | |
| 128.138.227.127 | — | 0 | | |
| 128.138.227.128 | — | 0 | | |
| 128.138.227.129 | rl1-dist227-gw.colorado.edu | 0 | | |
| 128.138.227.130 | fm-227-130.colorado.edu | 0 | | |
| 128.138.227.131 | fm-227-131.colorado.edu | 0 | | |
| 128.138.227.132 | fm-227-132.colorado.edu | 0 | | |
| 128.138.227.133 | mcfeely.colorado.edu | 0 | | |
| 128.138.227.134 | fm-227-134.colorado.edu | 0 | | |
| 128.138.227.135 | fm-227-135.colorado.edu | 0 | | |
| 128.138.227.136 | fm-227-136.colorado.edu | 0 | | |
| 128.138.227.137 | fm-227-137.colorado.edu | 0 | | |
| 128.138.227.138 | fm-227-138.colorado.edu | 0 | | |
| 128.138.227.139 | fm-227-139.colorado.edu | 0 | | |
| 128.138.227.140 | fm-227-140.colorado.edu | 0 | | |
| 128.138.227.141 | fm-227-141.colorado.edu | 0 | | |
| 128.138.227.142 | fm-227-142.colorado.edu | 0 | | |
| 128.138.227.143 | fm-227-143.colorado.edu | 0 | | |
| 128.138.227.144 | fm-227-144.colorado.edu | 0 | | |
| 128.138.227.145 | fm-227-145.colorado.edu | 0 | | |
| 128.138.227.146 | fm-227-146.colorado.edu | 0 | | |
| 128.138.227.147 | fm-227-147.colorado.edu | 0 | | |
| 128.138.227.148 | fm-227-148.colorado.edu | 0 | | |
| 128.138.227.149 | fm-227-149.colorado.edu | 0 | | |
| 128.138.227.150 | fm-227-150.colorado.edu | 0 | | |
| 128.138.227.151 | fm-227-151.colorado.edu | 0 | | |
| 128.138.227.152 | fm-227-152.colorado.edu | 0 | | |
| 128.138.227.153 | fm-227-153.colorado.edu | 0 | | |
| 128.138.227.154 | fm-227-154.colorado.edu | 0 | | |
| 128.138.227.155 | fm-227-155.colorado.edu | 0 | | |
| 128.138.227.156 | fm-227-156.colorado.edu | 0 | | |
| 128.138.227.157 | fm-227-157.colorado.edu | 0 | | |
| 128.138.227.158 | fm-227-158.colorado.edu | 0 | | |
| 128.138.227.159 | fm-227-159.colorado.edu | 0 | | |
| 128.138.227.160 | fm-227-160.colorado.edu | 0 | | |
| 128.138.227.161 | fm-227-161.colorado.edu | 0 | | |
| 128.138.227.162 | fm-227-162.colorado.edu | 0 | | |
| 128.138.227.163 | fm-227-163.colorado.edu | 0 | | |
| 128.138.227.164 | fm-227-164.colorado.edu | 0 | | |
| 128.138.227.165 | fm-227-165.colorado.edu | 0 | | |
| 128.138.227.166 | fm-227-166.colorado.edu | 0 | | |
| 128.138.227.167 | fm-227-167.colorado.edu | 0 | | |
| 128.138.227.168 | fm-227-168.colorado.edu | 0 | | |
| 128.138.227.169 | fm-227-169.colorado.edu | 0 | | |
| 128.138.227.170 | fm-227-170.colorado.edu | 0 | | |
| 128.138.227.171 | fm-227-171.colorado.edu | 0 | | |
| 128.138.227.172 | fm-227-172.colorado.edu | 0 | | |
| 128.138.227.173 | fm-227-173.colorado.edu | 0 | | |
| 128.138.227.174 | fm-227-174.colorado.edu | 0 | | |
| 128.138.227.175 | oit-walnn100-printer.colorado.edu | 0 | | |
| 128.138.227.176 | fm-227-176.colorado.edu | 0 | | |
| 128.138.227.177 | fm-227-177.colorado.edu | 0 | | |
| 128.138.227.178 | fm-227-178.colorado.edu | 0 | | |
| 128.138.227.179 | fm-227-179.colorado.edu | 0 | | |
| 128.138.227.180 | fm-227-180.colorado.edu | 0 | | |
| 128.138.227.181 | fm-227-181.colorado.edu | 0 | | |
| 128.138.227.182 | fm-227-182.colorado.edu | 0 | | |
| 128.138.227.183 | fm-227-183.colorado.edu | 0 | | |
| 128.138.227.184 | fm-227-184.colorado.edu | 0 | | |
| 128.138.227.185 | fm-227-185.colorado.edu | 0 | | |
| 128.138.227.186 | fm-227-186.colorado.edu | 0 | | |
| 128.138.227.187 | fm-227-187.colorado.edu | 0 | | |
| 128.138.227.188 | — | 0 | | |
| 128.138.227.189 | cu-dist-128.138.227.189.colorado.edu | 0 | | |
| 128.138.227.190 | cu-dist-128.138.227.190.colorado.edu | 0 | | |
| 128.138.227.191 | cu-dist-128.138.227.191.colorado.edu | 0 | | |
| 128.138.227.192 | cu-dist-128.138.227.192.colorado.edu | 0 | | |
| 128.138.227.193 | cu-dist-128.138.227.193.colorado.edu | 0 | | |
| 128.138.227.194 | cu-dist-128.138.227.194.colorado.edu | 0 | | |
| 128.138.227.195 | cu-dist-128.138.227.195.colorado.edu | 0 | | |
| 128.138.227.196 | cu-dist-128.138.227.196.colorado.edu | 0 | | |
| 128.138.227.197 | cu-dist-128.138.227.197.colorado.edu | 0 | | |
| 128.138.227.198 | cu-dist-128.138.227.198.colorado.edu | 0 | | |
| 128.138.227.199 | cu-dist-128.138.227.199.colorado.edu | 0 | | |
| 128.138.227.200 | cu-dist-128.138.227.200.colorado.edu | 0 | | |
| 128.138.227.201 | cu-dist-128.138.227.201.colorado.edu | 0 | | |
| 128.138.227.202 | cu-dist-128.138.227.202.colorado.edu | 0 | | |
| 128.138.227.203 | cu-dist-128.138.227.203.colorado.edu | 0 | | |
| 128.138.227.204 | cu-dist-128.138.227.204.colorado.edu | 0 | | |
| 128.138.227.205 | cu-dist-128.138.227.205.colorado.edu | 0 | | |
| 128.138.227.206 | cu-dist-128.138.227.206.colorado.edu | 0 | | |
| 128.138.227.207 | cu-dist-128.138.227.207.colorado.edu | 0 | | |
| 128.138.227.208 | cu-dist-128.138.227.208.colorado.edu | 0 | | |
| 128.138.227.209 | cu-dist-128.138.227.209.colorado.edu | 0 | | |
| 128.138.227.210 | cu-dist-128.138.227.210.colorado.edu | 0 | | |
| 128.138.227.211 | cu-dist-128.138.227.211.colorado.edu | 0 | | |
| 128.138.227.212 | cu-dist-128.138.227.212.colorado.edu | 0 | | |
| 128.138.227.213 | cu-dist-128.138.227.213.colorado.edu | 0 | | |
| 128.138.227.214 | cu-dist-128.138.227.214.colorado.edu | 0 | | |
| 128.138.227.215 | cu-dist-128.138.227.215.colorado.edu | 0 | | |
| 128.138.227.216 | cu-dist-128.138.227.216.colorado.edu | 0 | | |
| 128.138.227.217 | cu-dist-128.138.227.217.colorado.edu | 0 | | |
| 128.138.227.218 | cu-dist-128.138.227.218.colorado.edu | 0 | | |
| 128.138.227.219 | cu-dist-128.138.227.219.colorado.edu | 0 | | |
| 128.138.227.220 | cu-dist-128.138.227.220.colorado.edu | 0 | | |
| 128.138.227.221 | cu-dist-128.138.227.221.colorado.edu | 0 | | |
| 128.138.227.222 | cu-dist-128.138.227.222.colorado.edu | 0 | | |
| 128.138.227.223 | cu-dist-128.138.227.223.colorado.edu | 0 | | |
| 128.138.227.224 | cu-dist-128.138.227.224.colorado.edu | 0 | | |
| 128.138.227.225 | cu-dist-128.138.227.225.colorado.edu | 0 | | |
| 128.138.227.226 | cu-dist-128.138.227.226.colorado.edu | 0 | | |
| 128.138.227.227 | cu-dist-128.138.227.227.colorado.edu | 0 | | |
| 128.138.227.228 | cu-dist-128.138.227.228.colorado.edu | 0 | | |
| 128.138.227.229 | cu-dist-128.138.227.229.colorado.edu | 0 | | |
| 128.138.227.230 | cu-dist-128.138.227.230.colorado.edu | 0 | | |
| 128.138.227.231 | cu-dist-128.138.227.231.colorado.edu | 0 | | |
| 128.138.227.232 | cu-dist-128.138.227.232.colorado.edu | 0 | | |
| 128.138.227.233 | cu-dist-128.138.227.233.colorado.edu | 0 | | |
| 128.138.227.234 | cu-dist-128.138.227.234.colorado.edu | 0 | | |
| 128.138.227.235 | cu-dist-128.138.227.235.colorado.edu | 0 | | |
| 128.138.227.236 | cu-dist-128.138.227.236.colorado.edu | 0 | | |
| 128.138.227.237 | cu-dist-128.138.227.237.colorado.edu | 0 | | |
| 128.138.227.238 | cu-dist-128.138.227.238.colorado.edu | 0 | | |
| 128.138.227.239 | cu-dist-128.138.227.239.colorado.edu | 0 | | |
| 128.138.227.240 | cu-dist-128.138.227.240.colorado.edu | 0 | | |
| 128.138.227.241 | cu-dist-128.138.227.241.colorado.edu | 0 | | |
| 128.138.227.242 | cu-dist-128.138.227.242.colorado.edu | 0 | | |
| 128.138.227.243 | cu-dist-128.138.227.243.colorado.edu | 0 | | |
| 128.138.227.244 | cu-dist-128.138.227.244.colorado.edu | 0 | | |
| 128.138.227.245 | cu-dist-128.138.227.245.colorado.edu | 0 | | |
| 128.138.227.246 | cu-dist-128.138.227.246.colorado.edu | 0 | | |
| 128.138.227.247 | cu-dist-128.138.227.247.colorado.edu | 0 | | |
| 128.138.227.248 | cu-dist-128.138.227.248.colorado.edu | 0 | | |
| 128.138.227.249 | cu-dist-128.138.227.249.colorado.edu | 0 | | |
| 128.138.227.250 | cu-dist-128.138.227.250.colorado.edu | 0 | | |
| 128.138.227.251 | cu-dist-128.138.227.251.colorado.edu | 0 | | |
| 128.138.227.252 | cu-dist-128.138.227.252.colorado.edu | 0 | | |
| 128.138.227.253 | cu-dist-128.138.227.253.colorado.edu | 0 | | |
| 128.138.227.254 | cu-dist-128.138.227.254.colorado.edu | 0 | | |
| 128.138.227.255 | — | 0 | | |
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
$ traceroute -a -n -q1 -f2 -m8 128.138.227.117
traceroute to 128.138.227.117 (128.138.227.117): 8 hops max, 52 byte packets
6 *
7 *
8 *
Measurement taken from 
IPinfo ProbeNet in Los Angeles, US
IPinfo ProbeNet in Los Angeles, USOn