Summary
| ASN | AS104 University of Colorado at Boulder |
| BGP | 128.138.0.0/16 |
| IPs with RDNS | 175 |
| Hosted Domains | 0 |
| Pingable IPs | 0 |
| Router IPs | 0 |
| 128.138.77.0 | — | 0 |  | |
| 128.138.77.1 | rl1-gw-arce77.colorado.edu | 0 | | |
| 128.138.77.2 | — | 0 | | |
| 128.138.77.3 | — | 0 | | |
| 128.138.77.4 | — | 0 | | |
| 128.138.77.5 | — | 0 | | |
| 128.138.77.6 | — | 0 | | |
| 128.138.77.7 | — | 0 | | |
| 128.138.77.8 | — | 0 | | |
| 128.138.77.9 | — | 0 | | |
| 128.138.77.10 | — | 0 | | |
| 128.138.77.11 | — | 0 | | |
| 128.138.77.12 | — | 0 | | |
| 128.138.77.13 | arce77-13.colorado.edu | 0 | | |
| 128.138.77.14 | oit-p-002.colorado.edu | 0 | | |
| 128.138.77.15 | crcdb.colorado.edu | 0 | | |
| 128.138.77.16 | — | 0 | | |
| 128.138.77.17 | — | 0 | | |
| 128.138.77.18 | bitterroot.colorado.edu | 0 | | |
| 128.138.77.19 | rigilalt.colorado.edu | 0 | | |
| 128.138.77.20 | arce-267-xerox.int.colorado.edu | 0 | | |
| 128.138.77.21 | — | 0 | | |
| 128.138.77.22 | — | 0 | | |
| 128.138.77.23 | — | 0 | | |
| 128.138.77.24 | — | 0 | | |
| 128.138.77.25 | — | 0 | | |
| 128.138.77.26 | — | 0 | | |
| 128.138.77.27 | — | 0 | | |
| 128.138.77.28 | — | 0 | | |
| 128.138.77.29 | — | 0 | | |
| 128.138.77.30 | — | 0 | | |
| 128.138.77.31 | — | 0 | | |
| 128.138.77.32 | — | 0 | | |
| 128.138.77.33 | crcwww2.colorado.edu | 0 | | |
| 128.138.77.34 | — | 0 | | |
| 128.138.77.35 | — | 0 | | |
| 128.138.77.36 | — | 0 | | |
| 128.138.77.37 | — | 0 | | |
| 128.138.77.38 | — | 0 | | |
| 128.138.77.39 | — | 0 | | |
| 128.138.77.40 | — | 0 | | |
| 128.138.77.41 | — | 0 | | |
| 128.138.77.42 | — | 0 | | |
| 128.138.77.43 | — | 0 | | |
| 128.138.77.44 | — | 0 | | |
| 128.138.77.45 | — | 0 | | |
| 128.138.77.46 | — | 0 | | |
| 128.138.77.47 | — | 0 | | |
| 128.138.77.48 | — | 0 | | |
| 128.138.77.49 | — | 0 | | |
| 128.138.77.50 | — | 0 | | |
| 128.138.77.51 | — | 0 | | |
| 128.138.77.52 | — | 0 | | |
| 128.138.77.53 | — | 0 | | |
| 128.138.77.54 | crcapp.colorado.edu | 0 | | |
| 128.138.77.55 | — | 0 | | |
| 128.138.77.56 | ra.ad.colorado.edu | 0 | | |
| 128.138.77.57 | anubis.colorado.edu | 0 | | |
| 128.138.77.58 | — | 0 | | |
| 128.138.77.59 | crc.colorado.edu | 0 | | |
| 128.138.77.60 | — | 0 | | |
| 128.138.77.61 | crcfw.colorado.edu | 0 | | |
| 128.138.77.62 | — | 0 | | |
| 128.138.77.63 | crcweb.colorado.edu | 0 | | |
| 128.138.77.64 | — | 0 | | |
| 128.138.77.65 | crcwww1.colorado.edu | 0 | | |
| 128.138.77.66 | — | 0 | | |
| 128.138.77.67 | — | 0 | | |
| 128.138.77.68 | — | 0 | | |
| 128.138.77.69 | — | 0 | | |
| 128.138.77.70 | — | 0 | | |
| 128.138.77.71 | — | 0 | | |
| 128.138.77.72 | — | 0 | | |
| 128.138.77.73 | nitzilla.colorado.edu | 0 | | |
| 128.138.77.74 | instaarftp.colorado.edu | 0 | | |
| 128.138.77.75 | — | 0 | | |
| 128.138.77.76 | hp5000.colorado.edu | 0 | | |
| 128.138.77.77 | — | 0 | | |
| 128.138.77.78 | — | 0 | | |
| 128.138.77.79 | — | 0 | | |
| 128.138.77.80 | — | 0 | | |
| 128.138.77.81 | qgis.colorado.edu | 0 | | |
| 128.138.77.82 | — | 0 | | |
| 128.138.77.83 | — | 0 | | |
| 128.138.77.84 | — | 0 | | |
| 128.138.77.85 | stout.colorado.edu | 0 | | |
| 128.138.77.86 | — | 0 | | |
| 128.138.77.87 | — | 0 | | |
| 128.138.77.88 | — | 0 | | |
| 128.138.77.89 | — | 0 | | |
| 128.138.77.90 | — | 0 | | |
| 128.138.77.91 | — | 0 | | |
| 128.138.77.92 | — | 0 | | |
| 128.138.77.93 | — | 0 | | |
| 128.138.77.94 | — | 0 | | |
| 128.138.77.95 | — | 0 | | |
| 128.138.77.96 | raven.colorado.edu | 0 | | |
| 128.138.77.97 | arce77-97.colorado.edu | 0 | | |
| 128.138.77.98 | arce-77-98.colorado.edu | 0 | | |
| 128.138.77.99 | egis-bu-1.colorado.edu | 0 | | |
| 128.138.77.100 | — | 0 | | |
| 128.138.77.101 | — | 0 | | |
| 128.138.77.102 | elnino.colorado.edu | 0 | | |
| 128.138.77.103 | — | 0 | | |
| 128.138.77.104 | — | 0 | | |
| 128.138.77.105 | arce77-105-dhcp.colorado.edu | 0 | | |
| 128.138.77.106 | arce77-106-dhcp.colorado.edu | 0 | | |
| 128.138.77.107 | arce77-107-dhcp.colorado.edu | 0 | | |
| 128.138.77.108 | arce77-108-dhcp.colorado.edu | 0 | | |
| 128.138.77.109 | arce77-109-dhcp.colorado.edu | 0 | | |
| 128.138.77.110 | arce77-110-dhcp.colorado.edu | 0 | | |
| 128.138.77.111 | arce77-111-dhcp.colorado.edu | 0 | | |
| 128.138.77.112 | arce77-112-dhcp.colorado.edu | 0 | | |
| 128.138.77.113 | arce77-113-dhcp.colorado.edu | 0 | | |
| 128.138.77.114 | arce77-114-dhcp.colorado.edu | 0 | | |
| 128.138.77.115 | arce77-115-dhcp.colorado.edu | 0 | | |
| 128.138.77.116 | arce77-116-dhcp.colorado.edu | 0 | | |
| 128.138.77.117 | arce77-117-dhcp.colorado.edu | 0 | | |
| 128.138.77.118 | arce77-118-dhcp.colorado.edu | 0 | | |
| 128.138.77.119 | arce77-119-dhcp.colorado.edu | 0 | | |
| 128.138.77.120 | arce77-120-dhcp.colorado.edu | 0 | | |
| 128.138.77.121 | arce77-121-dhcp.colorado.edu | 0 | | |
| 128.138.77.122 | arce77-122-dhcp.colorado.edu | 0 | | |
| 128.138.77.123 | arce77-123-dhcp.colorado.edu | 0 | | |
| 128.138.77.124 | arce77-124-dhcp.colorado.edu | 0 | | |
| 128.138.77.125 | arce77-125-dhcp.colorado.edu | 0 | | |
| 128.138.77.126 | arce77-126-dhcp.colorado.edu | 0 | | |
| 128.138.77.127 | arce77-127-dhcp.colorado.edu | 0 | | |
| 128.138.77.128 | arce77-128-dhcp.colorado.edu | 0 | | |
| 128.138.77.129 | arce77-129-dhcp.colorado.edu | 0 | | |
| 128.138.77.130 | arce77-130-dhcp.colorado.edu | 0 | | |
| 128.138.77.131 | arce77-131-dhcp.colorado.edu | 0 | | |
| 128.138.77.132 | arce77-132-dhcp.colorado.edu | 0 | | |
| 128.138.77.133 | arce77-133-dhcp.colorado.edu | 0 | | |
| 128.138.77.134 | arce77-134-dhcp.colorado.edu | 0 | | |
| 128.138.77.135 | arce77-135-dhcp.colorado.edu | 0 | | |
| 128.138.77.136 | arce77-136-dhcp.colorado.edu | 0 | | |
| 128.138.77.137 | arce77-137-dhcp.colorado.edu | 0 | | |
| 128.138.77.138 | arce77-138-dhcp.colorado.edu | 0 | | |
| 128.138.77.139 | arce77-139-dhcp.colorado.edu | 0 | | |
| 128.138.77.140 | arce77-140-dhcp.colorado.edu | 0 | | |
| 128.138.77.141 | arce77-141-dhcp.colorado.edu | 0 | | |
| 128.138.77.142 | arce77-142-dhcp.colorado.edu | 0 | | |
| 128.138.77.143 | arce77-143-dhcp.colorado.edu | 0 | | |
| 128.138.77.144 | arce77-144-dhcp.colorado.edu | 0 | | |
| 128.138.77.145 | arce77-145-dhcp.colorado.edu | 0 | | |
| 128.138.77.146 | arce77-146-dhcp.colorado.edu | 0 | | |
| 128.138.77.147 | arce77-147-dhcp.colorado.edu | 0 | | |
| 128.138.77.148 | arce77-148-dhcp.colorado.edu | 0 | | |
| 128.138.77.149 | arce77-149-dhcp.colorado.edu | 0 | | |
| 128.138.77.150 | arce77-150-dhcp.colorado.edu | 0 | | |
| 128.138.77.151 | arce77-151-dhcp.colorado.edu | 0 | | |
| 128.138.77.152 | arce77-152-dhcp.colorado.edu | 0 | | |
| 128.138.77.153 | arce77-153-dhcp.colorado.edu | 0 | | |
| 128.138.77.154 | arce77-154-dhcp.colorado.edu | 0 | | |
| 128.138.77.155 | arce77-155-dhcp.colorado.edu | 0 | | |
| 128.138.77.156 | arce77-156-dhcp.colorado.edu | 0 | | |
| 128.138.77.157 | arce77-157-dhcp.colorado.edu | 0 | | |
| 128.138.77.158 | arce77-158-dhcp.colorado.edu | 0 | | |
| 128.138.77.159 | arce77-159-dhcp.colorado.edu | 0 | | |
| 128.138.77.160 | arce77-160-dhcp.colorado.edu | 0 | | |
| 128.138.77.161 | arce77-161-dhcp.colorado.edu | 0 | | |
| 128.138.77.162 | arce77-162-dhcp.colorado.edu | 0 | | |
| 128.138.77.163 | arce77-163-dhcp.colorado.edu | 0 | | |
| 128.138.77.164 | arce77-164-dhcp.colorado.edu | 0 | | |
| 128.138.77.165 | arce77-165-dhcp.colorado.edu | 0 | | |
| 128.138.77.166 | arce77-166-dhcp.colorado.edu | 0 | | |
| 128.138.77.167 | arce77-167-dhcp.colorado.edu | 0 | | |
| 128.138.77.168 | arce77-168-dhcp.colorado.edu | 0 | | |
| 128.138.77.169 | arce77-169-dhcp.colorado.edu | 0 | | |
| 128.138.77.170 | arce77-170-dhcp.colorado.edu | 0 | | |
| 128.138.77.171 | arce77-171-dhcp.colorado.edu | 0 | | |
| 128.138.77.172 | arce77-172-dhcp.colorado.edu | 0 | | |
| 128.138.77.173 | arce77-173-dhcp.colorado.edu | 0 | | |
| 128.138.77.174 | arce77-174-dhcp.colorado.edu | 0 | | |
| 128.138.77.175 | arce77-175-dhcp.colorado.edu | 0 | | |
| 128.138.77.176 | arce77-176-dhcp.colorado.edu | 0 | | |
| 128.138.77.177 | arce77-177-dhcp.colorado.edu | 0 | | |
| 128.138.77.178 | arce77-178-dhcp.colorado.edu | 0 | | |
| 128.138.77.179 | arce77-179-dhcp.colorado.edu | 0 | | |
| 128.138.77.180 | arce77-180-dhcp.colorado.edu | 0 | | |
| 128.138.77.181 | arce77-181-dhcp.colorado.edu | 0 | | |
| 128.138.77.182 | arce77-182-dhcp.colorado.edu | 0 | | |
| 128.138.77.183 | arce77-183-dhcp.colorado.edu | 0 | | |
| 128.138.77.184 | arce77-184-dhcp.colorado.edu | 0 | | |
| 128.138.77.185 | arce77-185-dhcp.colorado.edu | 0 | | |
| 128.138.77.186 | arce77-186-dhcp.colorado.edu | 0 | | |
| 128.138.77.187 | arce77-187-dhcp.colorado.edu | 0 | | |
| 128.138.77.188 | arce77-188-dhcp.colorado.edu | 0 | | |
| 128.138.77.189 | arce77-189-dhcp.colorado.edu | 0 | | |
| 128.138.77.190 | arce77-190-dhcp.colorado.edu | 0 | | |
| 128.138.77.191 | arce77-191-dhcp.colorado.edu | 0 | | |
| 128.138.77.192 | arce77-192-dhcp.colorado.edu | 0 | | |
| 128.138.77.193 | arce77-193-dhcp.colorado.edu | 0 | | |
| 128.138.77.194 | arce77-194-dhcp.colorado.edu | 0 | | |
| 128.138.77.195 | arce77-195-dhcp.colorado.edu | 0 | | |
| 128.138.77.196 | arce77-196-dhcp.colorado.edu | 0 | | |
| 128.138.77.197 | arce77-197-dhcp.colorado.edu | 0 | | |
| 128.138.77.198 | arce77-198-dhcp.colorado.edu | 0 | | |
| 128.138.77.199 | arce77-199-dhcp.colorado.edu | 0 | | |
| 128.138.77.200 | arce77-200-dhcp.colorado.edu | 0 | | |
| 128.138.77.201 | arce77-201-dhcp.colorado.edu | 0 | | |
| 128.138.77.202 | arce77-202-dhcp.colorado.edu | 0 | | |
| 128.138.77.203 | arce77-203-dhcp.colorado.edu | 0 | | |
| 128.138.77.204 | arce77-204-dhcp.colorado.edu | 0 | | |
| 128.138.77.205 | arce77-205-dhcp.colorado.edu | 0 | | |
| 128.138.77.206 | arce77-206-dhcp.colorado.edu | 0 | | |
| 128.138.77.207 | arce77-207-dhcp.colorado.edu | 0 | | |
| 128.138.77.208 | arce77-208-dhcp.colorado.edu | 0 | | |
| 128.138.77.209 | arce77-209-dhcp.colorado.edu | 0 | | |
| 128.138.77.210 | arce77-210-dhcp.colorado.edu | 0 | | |
| 128.138.77.211 | arce77-211-dhcp.colorado.edu | 0 | | |
| 128.138.77.212 | arce77-212-dhcp.colorado.edu | 0 | | |
| 128.138.77.213 | arce77-213-dhcp.colorado.edu | 0 | | |
| 128.138.77.214 | arce77-214-dhcp.colorado.edu | 0 | | |
| 128.138.77.215 | arce77-215-dhcp.colorado.edu | 0 | | |
| 128.138.77.216 | arce77-216-dhcp.colorado.edu | 0 | | |
| 128.138.77.217 | arce77-217-dhcp.colorado.edu | 0 | | |
| 128.138.77.218 | arce77-218-dhcp.colorado.edu | 0 | | |
| 128.138.77.219 | arce77-219-dhcp.colorado.edu | 0 | | |
| 128.138.77.220 | arce77-220-dhcp.colorado.edu | 0 | | |
| 128.138.77.221 | arce77-221-dhcp.colorado.edu | 0 | | |
| 128.138.77.222 | arce77-222-dhcp.colorado.edu | 0 | | |
| 128.138.77.223 | arce77-223-dhcp.colorado.edu | 0 | | |
| 128.138.77.224 | arce77-224-dhcp.colorado.edu | 0 | | |
| 128.138.77.225 | arce77-225-dhcp.colorado.edu | 0 | | |
| 128.138.77.226 | arce77-226-dhcp.colorado.edu | 0 | | |
| 128.138.77.227 | arce77-227-dhcp.colorado.edu | 0 | | |
| 128.138.77.228 | arce77-228-dhcp.colorado.edu | 0 | | |
| 128.138.77.229 | arce77-229-dhcp.colorado.edu | 0 | | |
| 128.138.77.230 | arce77-230-dhcp.colorado.edu | 0 | | |
| 128.138.77.231 | arce77-231-dhcp.colorado.edu | 0 | | |
| 128.138.77.232 | arce77-232-dhcp.colorado.edu | 0 | | |
| 128.138.77.233 | arce77-233-dhcp.colorado.edu | 0 | | |
| 128.138.77.234 | arce77-234-dhcp.colorado.edu | 0 | | |
| 128.138.77.235 | arce77-235-dhcp.colorado.edu | 0 | | |
| 128.138.77.236 | arce77-236-dhcp.colorado.edu | 0 | | |
| 128.138.77.237 | arce77-237-dhcp.colorado.edu | 0 | | |
| 128.138.77.238 | arce77-238-dhcp.colorado.edu | 0 | | |
| 128.138.77.239 | arce77-239-dhcp.colorado.edu | 0 | | |
| 128.138.77.240 | arce77-240-dhcp.colorado.edu | 0 | | |
| 128.138.77.241 | arce77-241-dhcp.colorado.edu | 0 | | |
| 128.138.77.242 | arce77-242-dhcp.colorado.edu | 0 | | |
| 128.138.77.243 | arce77-243-dhcp.colorado.edu | 0 | | |
| 128.138.77.244 | arce77-244-dhcp.colorado.edu | 0 | | |
| 128.138.77.245 | arce77-245-dhcp.colorado.edu | 0 | | |
| 128.138.77.246 | arce77-246-dhcp.colorado.edu | 0 | | |
| 128.138.77.247 | arce77-247-dhcp.colorado.edu | 0 | | |
| 128.138.77.248 | arce77-248-dhcp.colorado.edu | 0 | | |
| 128.138.77.249 | arce77-249-dhcp.colorado.edu | 0 | | |
| 128.138.77.250 | arce77-250-dhcp.colorado.edu | 0 | | |
| 128.138.77.251 | arce77-251-dhcp.colorado.edu | 0 | | |
| 128.138.77.252 | arce77-252-dhcp.colorado.edu | 0 | | |
| 128.138.77.253 | arce77-253-dhcp.colorado.edu | 0 | | |
| 128.138.77.254 | arce77-254-dhcp.colorado.edu | 0 | | |
| 128.138.77.255 | — | 0 | | |
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
$
traceroute -a -n -q1 -f4 -m10 128.138.77.45
traceroute to 128.138.77.45 (128.138.77.45): 10 hops max, 52 byte packets
6 *
8 *
9 *
10 *
Measurement taken from 
IPinfo ProbeNet in Luxembourg, LU
IPinfo ProbeNet in Luxembourg, LUOn