Summary
| ASN | AS2 University of Delaware |
| BGP | 128.4.0.0/16 |
| IPs with RDNS | 255 |
| Hosted Domains | 0 |
| Pingable IPs | 0 |
| Router IPs | 0 |
| 128.4.20.0 | — | 0 |  | |
| 128.4.20.1 | sw-nc01-7a-8-irb-420.nis.udel.edu | 0 | | |
| 128.4.20.2 | host-4-20-2.host.udel.edu | 0 | | |
| 128.4.20.3 | host-4-20-3.host.udel.edu | 0 | | |
| 128.4.20.4 | host-4-20-4.host.udel.edu | 0 | | |
| 128.4.20.5 | host-4-20-5.host.udel.edu | 0 | | |
| 128.4.20.6 | host-4-20-6.host.udel.edu | 0 | | |
| 128.4.20.7 | host-4-20-7.host.udel.edu | 0 | | |
| 128.4.20.8 | host-4-20-8.host.udel.edu | 0 | | |
| 128.4.20.9 | host-4-20-9.host.udel.edu | 0 | | |
| 128.4.20.10 | host-4-20-10.host.udel.edu | 0 | | |
| 128.4.20.11 | host-4-20-11.host.udel.edu | 0 | | |
| 128.4.20.12 | host-4-20-12.host.udel.edu | 0 | | |
| 128.4.20.13 | host-4-20-13.host.udel.edu | 0 | | |
| 128.4.20.14 | host-4-20-14.host.udel.edu | 0 | | |
| 128.4.20.15 | host-4-20-15.host.udel.edu | 0 | | |
| 128.4.20.16 | host-4-20-16.host.udel.edu | 0 | | |
| 128.4.20.17 | host-4-20-17.host.udel.edu | 0 | | |
| 128.4.20.18 | host-4-20-18.host.udel.edu | 0 | | |
| 128.4.20.19 | host-4-20-19.host.udel.edu | 0 | | |
| 128.4.20.20 | host-4-20-20.host.udel.edu | 0 | | |
| 128.4.20.21 | host-4-20-21.host.udel.edu | 0 | | |
| 128.4.20.22 | habanero.cis.udel.edu | 0 | | |
| 128.4.20.23 | host-4-20-23.host.udel.edu | 0 | | |
| 128.4.20.24 | host-4-20-24.host.udel.edu | 0 | | |
| 128.4.20.25 | host-4-20-25.host.udel.edu | 0 | | |
| 128.4.20.26 | host-4-20-26.host.udel.edu | 0 | | |
| 128.4.20.27 | host-4-20-27.host.udel.edu | 0 | | |
| 128.4.20.28 | host-4-20-28.host.udel.edu | 0 | | |
| 128.4.20.29 | host-4-20-29.host.udel.edu | 0 | | |
| 128.4.20.30 | uschill-lab0.cis.udel.edu | 0 | | |
| 128.4.20.31 | uschill-lab1.cis.udel.edu | 0 | | |
| 128.4.20.32 | uschill-lab2.cis.udel.edu | 0 | | |
| 128.4.20.33 | uschill-lab3.cis.udel.edu | 0 | | |
| 128.4.20.34 | uschill-lab4.cis.udel.edu | 0 | | |
| 128.4.20.35 | uschill-lab5.cis.udel.edu | 0 | | |
| 128.4.20.36 | host-4-20-36.host.udel.edu | 0 | | |
| 128.4.20.37 | host-4-20-37.host.udel.edu | 0 | | |
| 128.4.20.38 | host-4-20-38.host.udel.edu | 0 | | |
| 128.4.20.39 | host-4-20-39.host.udel.edu | 0 | | |
| 128.4.20.40 | host-4-20-40.host.udel.edu | 0 | | |
| 128.4.20.41 | delu.cis.udel.edu | 0 | | |
| 128.4.20.42 | host-4-20-42.host.udel.edu | 0 | | |
| 128.4.20.43 | host-4-20-43.host.udel.edu | 0 | | |
| 128.4.20.44 | host-4-20-44.host.udel.edu | 0 | | |
| 128.4.20.45 | host-4-20-45.host.udel.edu | 0 | | |
| 128.4.20.46 | host-4-20-46.host.udel.edu | 0 | | |
| 128.4.20.47 | host-4-20-47.host.udel.edu | 0 | | |
| 128.4.20.48 | host-4-20-48.host.udel.edu | 0 | | |
| 128.4.20.49 | host-4-20-49.host.udel.edu | 0 | | |
| 128.4.20.50 | host-4-20-50.host.udel.edu | 0 | | |
| 128.4.20.51 | host-4-20-51.host.udel.edu | 0 | | |
| 128.4.20.52 | host-4-20-52.host.udel.edu | 0 | | |
| 128.4.20.53 | host-4-20-53.host.udel.edu | 0 | | |
| 128.4.20.54 | host-4-20-54.host.udel.edu | 0 | | |
| 128.4.20.55 | host-4-20-55.host.udel.edu | 0 | | |
| 128.4.20.56 | host-4-20-56.host.udel.edu | 0 | | |
| 128.4.20.57 | host-4-20-57.host.udel.edu | 0 | | |
| 128.4.20.58 | host-4-20-58.host.udel.edu | 0 | | |
| 128.4.20.59 | host-4-20-59.host.udel.edu | 0 | | |
| 128.4.20.60 | host-4-20-60.host.udel.edu | 0 | | |
| 128.4.20.61 | host-4-20-61.host.udel.edu | 0 | | |
| 128.4.20.62 | host-4-20-62.host.udel.edu | 0 | | |
| 128.4.20.63 | host-4-20-63.host.udel.edu | 0 | | |
| 128.4.20.64 | host-4-20-64.host.udel.edu | 0 | | |
| 128.4.20.65 | host-4-20-65.host.udel.edu | 0 | | |
| 128.4.20.66 | host-4-20-66.host.udel.edu | 0 | | |
| 128.4.20.67 | host-4-20-67.host.udel.edu | 0 | | |
| 128.4.20.68 | host-4-20-68.host.udel.edu | 0 | | |
| 128.4.20.69 | host-4-20-69.host.udel.edu | 0 | | |
| 128.4.20.70 | host-4-20-70.host.udel.edu | 0 | | |
| 128.4.20.71 | bulgaria.gcl.cis.udel.edu | 0 | | |
| 128.4.20.72 | host-4-20-72.host.udel.edu | 0 | | |
| 128.4.20.73 | finland.gcl.cis.udel.edu | 0 | | |
| 128.4.20.74 | poland.gcl.cis.udel.edu | 0 | | |
| 128.4.20.75 | italy.gcl.cis.udel.edu | 0 | | |
| 128.4.20.76 | uk.gcl.cis.udel.edu | 0 | | |
| 128.4.20.77 | belarus.gcl.cis.udel.edu | 0 | | |
| 128.4.20.78 | romania.gcl.cis.udel.edu | 0 | | |
| 128.4.20.79 | denmark.gcl.cis.udel.edu | 0 | | |
| 128.4.20.80 | america.gcl.cis.udel.edu | 0 | | |
| 128.4.20.81 | host-4-20-81.host.udel.edu | 0 | | |
| 128.4.20.82 | host-4-20-82.host.udel.edu | 0 | | |
| 128.4.20.83 | host-4-20-83.host.udel.edu | 0 | | |
| 128.4.20.84 | taufer-prt1.gcl.cis.udel.edu | 0 | | |
| 128.4.20.85 | host-4-20-85.host.udel.edu | 0 | | |
| 128.4.20.86 | host-4-20-86.host.udel.edu | 0 | | |
| 128.4.20.87 | tanzania.gcl.cis.udel.edu | 0 | | |
| 128.4.20.88 | norway.gcl.cis.udel.edu | 0 | | |
| 128.4.20.89 | peru.gcl.cis.udel.edu | 0 | | |
| 128.4.20.90 | bhutan.gcl.cis.udel.edu | 0 | | |
| 128.4.20.91 | host-4-20-91.host.udel.edu | 0 | | |
| 128.4.20.92 | host-4-20-92.host.udel.edu | 0 | | |
| 128.4.20.93 | host-4-20-93.host.udel.edu | 0 | | |
| 128.4.20.94 | host-4-20-94.host.udel.edu | 0 | | |
| 128.4.20.95 | host-4-20-95.host.udel.edu | 0 | | |
| 128.4.20.96 | host-4-20-96.host.udel.edu | 0 | | |
| 128.4.20.97 | host-4-20-97.host.udel.edu | 0 | | |
| 128.4.20.98 | host-4-20-98.host.udel.edu | 0 | | |
| 128.4.20.99 | host-4-20-99.host.udel.edu | 0 | | |
| 128.4.20.100 | host-4-20-100.host.udel.edu | 0 | | |
| 128.4.20.101 | host-4-20-101.host.udel.edu | 0 | | |
| 128.4.20.102 | host-4-20-102.host.udel.edu | 0 | | |
| 128.4.20.103 | host-4-20-103.host.udel.edu | 0 | | |
| 128.4.20.104 | host-4-20-104.host.udel.edu | 0 | | |
| 128.4.20.105 | host-4-20-105.host.udel.edu | 0 | | |
| 128.4.20.106 | host-4-20-106.host.udel.edu | 0 | | |
| 128.4.20.107 | host-4-20-107.host.udel.edu | 0 | | |
| 128.4.20.108 | host-4-20-108.host.udel.edu | 0 | | |
| 128.4.20.109 | host-4-20-109.host.udel.edu | 0 | | |
| 128.4.20.110 | host-4-20-110.host.udel.edu | 0 | | |
| 128.4.20.111 | host-4-20-111.host.udel.edu | 0 | | |
| 128.4.20.112 | host-4-20-112.host.udel.edu | 0 | | |
| 128.4.20.113 | host-4-20-113.host.udel.edu | 0 | | |
| 128.4.20.114 | host-4-20-114.host.udel.edu | 0 | | |
| 128.4.20.115 | host-4-20-115.host.udel.edu | 0 | | |
| 128.4.20.116 | host-4-20-116.host.udel.edu | 0 | | |
| 128.4.20.117 | host-4-20-117.host.udel.edu | 0 | | |
| 128.4.20.118 | host-4-20-118.host.udel.edu | 0 | | |
| 128.4.20.119 | host-4-20-119.host.udel.edu | 0 | | |
| 128.4.20.120 | host-4-20-120.host.udel.edu | 0 | | |
| 128.4.20.121 | host-4-20-121.host.udel.edu | 0 | | |
| 128.4.20.122 | host-4-20-122.host.udel.edu | 0 | | |
| 128.4.20.123 | host-4-20-123.host.udel.edu | 0 | | |
| 128.4.20.124 | host-4-20-124.host.udel.edu | 0 | | |
| 128.4.20.125 | host-4-20-125.host.udel.edu | 0 | | |
| 128.4.20.126 | host-4-20-126.host.udel.edu | 0 | | |
| 128.4.20.127 | host-4-20-127.host.udel.edu | 0 | | |
| 128.4.20.128 | host-4-20-128.host.udel.edu | 0 | | |
| 128.4.20.129 | host-4-20-129.host.udel.edu | 0 | | |
| 128.4.20.130 | basil.cis.udel.edu | 0 | | |
| 128.4.20.131 | comfrey.cis.udel.edu | 0 | | |
| 128.4.20.132 | chamomile.cis.udel.edu | 0 | | |
| 128.4.20.133 | lavender.cis.udel.edu | 0 | | |
| 128.4.20.134 | quinoa.cis.udel.edu | 0 | | |
| 128.4.20.135 | biotm1.cis.udel.edu | 0 | | |
| 128.4.20.136 | bambam.cis.udel.edu | 0 | | |
| 128.4.20.137 | pebbles.cis.udel.edu | 0 | | |
| 128.4.20.138 | dino.cis.udel.edu | 0 | | |
| 128.4.20.139 | dinah.cis.udel.edu | 0 | | |
| 128.4.20.140 | sethi.pc.cis.udel.edu | 0 | | |
| 128.4.20.141 | gumby.cis.udel.edu | 0 | | |
| 128.4.20.142 | tweety.cis.udel.edu | 0 | | |
| 128.4.20.143 | host-4-20-143.host.udel.edu | 0 | | |
| 128.4.20.144 | host-4-20-144.host.udel.edu | 0 | | |
| 128.4.20.145 | host-4-20-145.host.udel.edu | 0 | | |
| 128.4.20.146 | host-4-20-146.host.udel.edu | 0 | | |
| 128.4.20.147 | host-4-20-147.host.udel.edu | 0 | | |
| 128.4.20.148 | host-4-20-148.host.udel.edu | 0 | | |
| 128.4.20.149 | host-4-20-149.host.udel.edu | 0 | | |
| 128.4.20.150 | host-4-20-150.host.udel.edu | 0 | | |
| 128.4.20.151 | host-4-20-151.host.udel.edu | 0 | | |
| 128.4.20.152 | host-4-20-152.host.udel.edu | 0 | | |
| 128.4.20.153 | host-4-20-153.host.udel.edu | 0 | | |
| 128.4.20.154 | host-4-20-154.host.udel.edu | 0 | | |
| 128.4.20.155 | host-4-20-155.host.udel.edu | 0 | | |
| 128.4.20.156 | host-4-20-156.host.udel.edu | 0 | | |
| 128.4.20.157 | tachyon.liao.cis.udel.edu | 0 | | |
| 128.4.20.158 | host-4-20-158.host.udel.edu | 0 | | |
| 128.4.20.159 | ml00.acad.cis.udel.edu | 0 | | |
| 128.4.20.160 | caribbean.pc.cis.udel.edu | 0 | | |
| 128.4.20.161 | buzet.pc.cis.udel.edu | 0 | | |
| 128.4.20.162 | reisling.pc.cis.udel.edu | 0 | | |
| 128.4.20.163 | muscat.pc.cis.udel.edu | 0 | | |
| 128.4.20.164 | fitou.pc.cis.udel.edu | 0 | | |
| 128.4.20.165 | vouvray.pc.cis.udel.edu | 0 | | |
| 128.4.20.166 | pinot.pc.cis.udel.edu | 0 | | |
| 128.4.20.167 | chablis.pc.cis.udel.edu | 0 | | |
| 128.4.20.168 | shiraz.pc.cis.udel.edu | 0 | | |
| 128.4.20.169 | biotm2.cis.udel.edu | 0 | | |
| 128.4.20.170 | host-4-20-170.host.udel.edu | 0 | | |
| 128.4.20.171 | arnica.cis.udel.edu | 0 | | |
| 128.4.20.172 | garlic.cis.udel.edu | 0 | | |
| 128.4.20.173 | calendula.cis.udel.edu | 0 | | |
| 128.4.20.174 | host-4-20-174.host.udel.edu | 0 | | |
| 128.4.20.175 | hmrg.pc.cis.udel.edu | 0 | | |
| 128.4.20.176 | host-4-20-176.host.udel.edu | 0 | | |
| 128.4.20.177 | host-4-20-177.host.udel.edu | 0 | | |
| 128.4.20.178 | host-4-20-178.host.udel.edu | 0 | | |
| 128.4.20.179 | host-4-20-179.host.udel.edu | 0 | | |
| 128.4.20.180 | host-4-20-180.host.udel.edu | 0 | | |
| 128.4.20.181 | host-4-20-181.host.udel.edu | 0 | | |
| 128.4.20.182 | gauss.cis.udel.edu | 0 | | |
| 128.4.20.183 | dreal.cis.udel.edu | 0 | | |
| 128.4.20.184 | host-4-20-184.host.udel.edu | 0 | | |
| 128.4.20.185 | einstein.cis.udel.edu | 0 | | |
| 128.4.20.186 | host-4-20-186.host.udel.edu | 0 | | |
| 128.4.20.187 | host-4-20-187.host.udel.edu | 0 | | |
| 128.4.20.188 | host-4-20-188.host.udel.edu | 0 | | |
| 128.4.20.189 | host-4-20-189.host.udel.edu | 0 | | |
| 128.4.20.190 | pixel.cis.udel.edu | 0 | | |
| 128.4.20.191 | host-4-20-191.host.udel.edu | 0 | | |
| 128.4.20.192 | roaming-4-20-192.host.udel.edu | 0 | | |
| 128.4.20.193 | roaming-4-20-193.host.udel.edu | 0 | | |
| 128.4.20.194 | roaming-4-20-194.host.udel.edu | 0 | | |
| 128.4.20.195 | roaming-4-20-195.host.udel.edu | 0 | | |
| 128.4.20.196 | roaming-4-20-196.host.udel.edu | 0 | | |
| 128.4.20.197 | roaming-4-20-197.host.udel.edu | 0 | | |
| 128.4.20.198 | roaming-4-20-198.host.udel.edu | 0 | | |
| 128.4.20.199 | roaming-4-20-199.host.udel.edu | 0 | | |
| 128.4.20.200 | roaming-4-20-200.host.udel.edu | 0 | | |
| 128.4.20.201 | roaming-4-20-201.host.udel.edu | 0 | | |
| 128.4.20.202 | roaming-4-20-202.host.udel.edu | 0 | | |
| 128.4.20.203 | roaming-4-20-203.host.udel.edu | 0 | | |
| 128.4.20.204 | roaming-4-20-204.host.udel.edu | 0 | | |
| 128.4.20.205 | roaming-4-20-205.host.udel.edu | 0 | | |
| 128.4.20.206 | roaming-4-20-206.host.udel.edu | 0 | | |
| 128.4.20.207 | roaming-4-20-207.host.udel.edu | 0 | | |
| 128.4.20.208 | roaming-4-20-208.host.udel.edu | 0 | | |
| 128.4.20.209 | roaming-4-20-209.host.udel.edu | 0 | | |
| 128.4.20.210 | roaming-4-20-210.host.udel.edu | 0 | | |
| 128.4.20.211 | roaming-4-20-211.host.udel.edu | 0 | | |
| 128.4.20.212 | roaming-4-20-212.host.udel.edu | 0 | | |
| 128.4.20.213 | roaming-4-20-213.host.udel.edu | 0 | | |
| 128.4.20.214 | roaming-4-20-214.host.udel.edu | 0 | | |
| 128.4.20.215 | roaming-4-20-215.host.udel.edu | 0 | | |
| 128.4.20.216 | roaming-4-20-216.host.udel.edu | 0 | | |
| 128.4.20.217 | roaming-4-20-217.host.udel.edu | 0 | | |
| 128.4.20.218 | roaming-4-20-218.host.udel.edu | 0 | | |
| 128.4.20.219 | roaming-4-20-219.host.udel.edu | 0 | | |
| 128.4.20.220 | roaming-4-20-220.host.udel.edu | 0 | | |
| 128.4.20.221 | roaming-4-20-221.host.udel.edu | 0 | | |
| 128.4.20.222 | roaming-4-20-222.host.udel.edu | 0 | | |
| 128.4.20.223 | roaming-4-20-223.host.udel.edu | 0 | | |
| 128.4.20.224 | roaming-4-20-224.host.udel.edu | 0 | | |
| 128.4.20.225 | roaming-4-20-225.host.udel.edu | 0 | | |
| 128.4.20.226 | roaming-4-20-226.host.udel.edu | 0 | | |
| 128.4.20.227 | roaming-4-20-227.host.udel.edu | 0 | | |
| 128.4.20.228 | roaming-4-20-228.host.udel.edu | 0 | | |
| 128.4.20.229 | roaming-4-20-229.host.udel.edu | 0 | | |
| 128.4.20.230 | roaming-4-20-230.host.udel.edu | 0 | | |
| 128.4.20.231 | roaming-4-20-231.host.udel.edu | 0 | | |
| 128.4.20.232 | roaming-4-20-232.host.udel.edu | 0 | | |
| 128.4.20.233 | roaming-4-20-233.host.udel.edu | 0 | | |
| 128.4.20.234 | roaming-4-20-234.host.udel.edu | 0 | | |
| 128.4.20.235 | roaming-4-20-235.host.udel.edu | 0 | | |
| 128.4.20.236 | roaming-4-20-236.host.udel.edu | 0 | | |
| 128.4.20.237 | roaming-4-20-237.host.udel.edu | 0 | | |
| 128.4.20.238 | roaming-4-20-238.host.udel.edu | 0 | | |
| 128.4.20.239 | roaming-4-20-239.host.udel.edu | 0 | | |
| 128.4.20.240 | roaming-4-20-240.host.udel.edu | 0 | | |
| 128.4.20.241 | roaming-4-20-241.host.udel.edu | 0 | | |
| 128.4.20.242 | roaming-4-20-242.host.udel.edu | 0 | | |
| 128.4.20.243 | roaming-4-20-243.host.udel.edu | 0 | | |
| 128.4.20.244 | roaming-4-20-244.host.udel.edu | 0 | | |
| 128.4.20.245 | roaming-4-20-245.host.udel.edu | 0 | | |
| 128.4.20.246 | roaming-4-20-246.host.udel.edu | 0 | | |
| 128.4.20.247 | roaming-4-20-247.host.udel.edu | 0 | | |
| 128.4.20.248 | roaming-4-20-248.host.udel.edu | 0 | | |
| 128.4.20.249 | roaming-4-20-249.host.udel.edu | 0 | | |
| 128.4.20.250 | roaming-4-20-250.host.udel.edu | 0 | | |
| 128.4.20.251 | roaming-4-20-251.host.udel.edu | 0 | | |
| 128.4.20.252 | roaming-4-20-252.host.udel.edu | 0 | | |
| 128.4.20.253 | host-4-20-253.host.udel.edu | 0 | | |
| 128.4.20.254 | host-4-20-254.host.udel.edu | 0 | | |
| 128.4.20.255 | host-128-4-20-255.host.udel.edu | 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 -m10 128.4.20.87
traceroute to 128.4.20.87 (128.4.20.87): 10 hops max, 52 byte packets
3 *
5 *
8 *
9 *
10 *
Measurement taken from 
IPinfo ProbeNet in Ashburn, US
IPinfo ProbeNet in Ashburn, USOn