Summary
| ASN | AS55 University of Pennsylvania |
| BGP | 128.91.0.0/16 |
| IPs with RDNS | 254 |
| Hosted Domains | 0 |
| Pingable IPs | 10 |
| Router IPs | 0 |
| 128.91.43.0 | — | 0 |  | |
| 128.91.43.1 | — | 0 | | |
| 128.91.43.2 | advlab-990-03.physics.upenn.edu | 0 | | |
| 128.91.43.3 | hborders17.physics.upenn.edu | 0 | | |
| 128.91.43.4 | sas-tom17-wd.physics.upenn.edu | 0 | | |
| 128.91.43.5 | dsliski-adapter.physics.upenn.edu | 0 | | |
| 128.91.43.6 | ashbaker-loan.physics.upenn.edu | 0 | | |
| 128.91.43.7 | zoo-9010-01.physics.upenn.edu | 0 | | |
| 128.91.43.8 | drndic-lab13.physics.upenn.edu | 0 | | |
| 128.91.43.9 | drndic-lab12.physics.upenn.edu | 0 | | |
| 128.91.43.10 | drndic-lab11.physics.upenn.edu | 0 | | |
| 128.91.43.11 | drndic-lab08.physics.upenn.edu | 0 | | |
| 128.91.43.12 | shalv01.physics.upenn.edu | 0 | | |
| 128.91.43.13 | roblewis01.physics.upenn.edu | 0 | | |
| 128.91.43.14 | plaplant16.physics.upenn.edu | 0 | | |
| 128.91.43.15 | advlab-m910q-23.physics.upenn.edu | 0 | | |
| 128.91.43.16 | kcoakley-16.physics.upenn.edu | 0 | | |
| 128.91.43.17 | gradlab-990-12.physics.upenn.edu | 0 | | |
| 128.91.43.18 | gradlab-990-11.physics.upenn.edu | 0 | | |
| 128.91.43.19 | gradlab-990-10.physics.upenn.edu | 0 | | |
| 128.91.43.20 | gradlab-990-09.physics.upenn.edu | 0 | | |
| 128.91.43.21 | gradlab-990-08.physics.upenn.edu | 0 | | |
| 128.91.43.22 | gradlab-990-07.physics.upenn.edu | 0 | | |
| 128.91.43.23 | gradlab-990-06.physics.upenn.edu | 0 | | |
| 128.91.43.24 | gradlab-990-05.physics.upenn.edu | 0 | | |
| 128.91.43.25 | gradlab-990-04.physics.upenn.edu | 0 | | |
| 128.91.43.26 | gradlab-990-03.physics.upenn.edu | 0 | | |
| 128.91.43.27 | gradlab-990-01.physics.upenn.edu | 0 | | |
| 128.91.43.28 | pcn-surplus-16.physics.upenn.edu | 0 | | |
| 128.91.43.29 | 4n21.physics.upenn.edu | 0 | | |
| 128.91.43.30 | 3w13-printer.physics.upenn.edu | 0 |  | |
| 128.91.43.31 | physics-undergrad-chair.physics.upenn.edu | 0 | | |
| 128.91.43.32 | ajliu16.physics.upenn.edu | 0 | | |
| 128.91.43.33 | loligo.physics.upenn.edu | 0 | | |
| 128.91.43.34 | zw229-15.physics.upenn.edu | 0 | | |
| 128.91.43.35 | sas-drl3w115-wd.sas.upenn.edu | 0 | | |
| 128.91.43.36 | chblakenetgearswitch.physics.upenn.edu | 0 | | |
| 128.91.43.37 | chblake-omegatemp3.physics.upenn.edu | 0 | | |
| 128.91.43.38 | chblake-pdu2.physics.upenn.edu | 0 | | |
| 128.91.43.39 | sas-drl3n201-wd.sas.upenn.edu | 0 | | |
| 128.91.43.40 | gradlab-21-13.physics.upenn.edu | 0 | | |
| 128.91.43.41 | gradlab-21-12.physics.upenn.edu | 0 | | |
| 128.91.43.42 | hpljp1.physics.upenn.edu | 0 | | |
| 128.91.43.43 | gradlab-21-11.physics.upenn.edu | 0 | | |
| 128.91.43.44 | gradlab-21-10.physics.upenn.edu | 0 | | |
| 128.91.43.45 | probestation.sas.upenn.edu | 0 | | |
| 128.91.43.46 | sensorstation.sas.upenn.edu | 0 | | |
| 128.91.43.47 | michlast19.physics.upenn.edu | 0 | | |
| 128.91.43.48 | castor.physics.upenn.edu | 0 | | |
| 128.91.43.49 | sas-drl3n172-wd.sas.upenn.edu | 0 | | |
| 128.91.43.50 | sas-drl3w113-wd.sas.upenn.edu | 0 | | |
| 128.91.43.51 | 4n5-color.physics.upenn.edu | 0 | | |
| 128.91.43.52 | gradlab-21-09.physics.upenn.edu | 0 | | |
| 128.91.43.53 | ug-lounge01.physics.upenn.edu | 0 | | |
| 128.91.43.54 | dalek.physics.upenn.edu | 0 | | |
| 128.91.43.55 | zprinter.physics.upenn.edu | 0 | | |
| 128.91.43.56 | iroquois.physics.upenn.edu | 0 | | |
| 128.91.43.57 | berner-13.physics.upenn.edu | 0 | | |
| 128.91.43.58 | gin.physics.upenn.edu | 0 | | |
| 128.91.43.59 | gradlab-21-08.physics.upenn.edu | 0 | | |
| 128.91.43.60 | drl-2e16.physics.upenn.edu | 0 | | |
| 128.91.43.61 | apal01.physics.upenn.edu | 0 | | |
| 128.91.43.62 | hep-raspi.physics.upenn.edu | 0 | | |
| 128.91.43.63 | cjohnson02.physics.upenn.edu | 0 | | |
| 128.91.43.64 | gradlab-21-07.physics.upenn.edu | 0 | | |
| 128.91.43.65 | asweeney.physics.upenn.edu | 0 | | |
| 128.91.43.66 | weihh.physics.upenn.edu | 0 | | |
| 128.91.43.67 | gradlab-21-04.physics.upenn.edu | 0 | | |
| 128.91.43.68 | 3n13.physics.upenn.edu | 0 | | |
| 128.91.43.69 | menko01.physics.upenn.edu | 0 | | |
| 128.91.43.70 | spider.physics.upenn.edu | 0 | | |
| 128.91.43.71 | highalt.physics.upenn.edu | 0 | | |
| 128.91.43.72 | chile1.physics.upenn.edu | 0 | | |
| 128.91.43.73 | byrd.physics.upenn.edu | 0 | | |
| 128.91.43.74 | obelix.physics.upenn.edu | 0 | | |
| 128.91.43.75 | submm.physics.upenn.edu | 0 | | |
| 128.91.43.76 | atacama.physics.upenn.edu | 0 | | |
| 128.91.43.77 | balloon.physics.upenn.edu | 0 | | |
| 128.91.43.78 | lusiphur.physics.upenn.edu | 0 | | |
| 128.91.43.79 | asterix.physics.upenn.edu | 0 | | |
| 128.91.43.80 | dogmatix.physics.upenn.edu | 0 | | |
| 128.91.43.81 | devlin_lab_m554.physics.upenn.edu | 0 | | |
| 128.91.43.82 | stylus-color-3000.physics.upenn.edu | 0 | | |
| 128.91.43.83 | desktop-8g0ijau.sas.upenn.edu | 0 | | |
| 128.91.43.84 | lp1e2.physics.upenn.edu | 0 | | |
| 128.91.43.85 | lapis.physics.upenn.edu | 0 | | |
| 128.91.43.86 | submmgw.physics.upenn.edu | 0 | | |
| 128.91.43.87 | ecosmo.physics.upenn.edu | 0 | | |
| 128.91.43.88 | aguirre-t3620.physics.upenn.edu | 0 | | |
| 128.91.43.89 | barm.physics.upenn.edu | 0 | | |
| 128.91.43.90 | mele03.physics.upenn.edu | 0 | | |
| 128.91.43.91 | drndiclab20.physics.upenn.edu | 0 | | |
| 128.91.43.92 | 2e6-nat.physics.upenn.edu | 0 | | |
| 128.91.43.93 | paperlacie2.physics.upenn.edu | 0 | | |
| 128.91.43.94 | paperlacie1.physics.upenn.edu | 0 | | |
| 128.91.43.95 | pop-22.math.upenn.edu | 0 | | |
| 128.91.43.96 | johnsonlab02.physics.upenn.edu | 0 | | |
| 128.91.43.97 | robertjo18.physics.upenn.edu | 0 | | |
| 128.91.43.98 | depth.physics.upenn.edu | 0 | | |
| 128.91.43.99 | melegroup03.physics.upenn.edu | 0 | | |
| 128.91.43.100 | melegroup02.physics.upenn.edu | 0 | | |
| 128.91.43.101 | phys-2n7.physics.upenn.edu | 0 | | |
| 128.91.43.102 | phys-hp2n7.physics.upenn.edu | 0 | | |
| 128.91.43.103 | hp3e5.physics.upenn.edu | 0 | | |
| 128.91.43.104 | phys-1n1.physics.upenn.edu | 0 | | |
| 128.91.43.105 | lp3n8.physics.upenn.edu | 0 | | |
| 128.91.43.106 | melegroup01.physics.upenn.edu | 0 | | |
| 128.91.43.107 | vithayat03.physics.upenn.edu | 0 | | |
| 128.91.43.108 | sakstein17.physics.upenn.edu | 0 | | |
| 128.91.43.109 | yodh01.physics.upenn.edu | 0 | | |
| 128.91.43.110 | milerner.physics.upenn.edu | 0 | | |
| 128.91.43.111 | shalaowai.physics.upenn.edu | 0 | | |
| 128.91.43.112 | heiney02.physics.upenn.edu | 0 | | |
| 128.91.43.113 | wulab6.physics.upenn.edu | 0 | | |
| 128.91.43.114 | avocado.physics.upenn.edu | 0 | | |
| 128.91.43.115 | aguirre09.physics.upenn.edu | 0 | | |
| 128.91.43.116 | aguirre08.physics.upenn.edu | 0 | | |
| 128.91.43.117 | aguirre07.physics.upenn.edu | 0 | | |
| 128.91.43.118 | jacksonh02.physics.upenn.edu | 0 | | |
| 128.91.43.119 | brebis.physics.upenn.edu | 0 | | |
| 128.91.43.120 | fortuneprinter.physics.upenn.edu | 0 | | |
| 128.91.43.121 | tom02.physics.upenn.edu | 0 | | |
| 128.91.43.122 | aguirreww.physics.upenn.edu | 0 | | |
| 128.91.43.123 | taleggio.physics.upenn.edu | 0 | | |
| 128.91.43.124 | ludwig.physics.upenn.edu | 0 | | |
| 128.91.43.125 | polaris.physics.upenn.edu | 0 | | |
| 128.91.43.126 | pietro.physics.upenn.edu | 0 | | |
| 128.91.43.127 | hawaii.physics.upenn.edu | 0 | | |
| 128.91.43.128 | timstarcam1.physics.upenn.edu | 0 | | |
| 128.91.43.129 | sally-printer.physics.upenn.edu | 0 | | |
| 128.91.43.130 | gluck22.math.upenn.edu | 0 | | |
| 128.91.43.131 | israel.physics.upenn.edu | 0 | | |
| 128.91.43.132 | aguirre05.physics.upenn.edu | 0 | | |
| 128.91.43.133 | phys-drl2e2-copier.physics.upenn.edu | 0 | | |
| 128.91.43.134 | umbriel.physics.upenn.edu | 0 | | |
| 128.91.43.135 | steppenwolf.physics.upenn.edu | 0 | | |
| 128.91.43.136 | yodh02.physics.upenn.edu | 0 | | |
| 128.91.43.137 | gladney01.physics.upenn.edu | 0 | | |
| 128.91.43.138 | alidz01.physics.upenn.edu | 0 | | |
| 128.91.43.139 | clawrie.physics.upenn.edu | 0 | | |
| 128.91.43.140 | devlinlab.physics.upenn.edu | 0 | | |
| 128.91.43.141 | aguirre06.physics.upenn.edu | 0 | | |
| 128.91.43.142 | vijay1.physics.upenn.edu | 0 | | |
| 128.91.43.143 | drndiclab-bkup.physics.upenn.edu | 0 | | |
| 128.91.43.144 | fortune14.physics.upenn.edu | 0 | | |
| 128.91.43.145 | matsui.physics.upenn.edu | 0 | | |
| 128.91.43.146 | manjula.physics.upenn.edu | 0 | | |
| 128.91.43.147 | lupus.physics.upenn.edu | 0 | | |
| 128.91.43.148 | jordan.physics.upenn.edu | 0 | | |
| 128.91.43.149 | hippo.physics.upenn.edu | 0 | | |
| 128.91.43.150 | fortune03.physics.upenn.edu | 0 | | |
| 128.91.43.151 | tali.physics.upenn.edu | 0 | | |
| 128.91.43.152 | peitou.physics.upenn.edu | 0 | | |
| 128.91.43.153 | chitou.physics.upenn.edu | 0 | | |
| 128.91.43.154 | hsinyi.physics.upenn.edu | 0 | | |
| 128.91.43.155 | reno.physics.upenn.edu | 0 | | |
| 128.91.43.156 | wuku.physics.upenn.edu | 0 | | |
| 128.91.43.157 | procyon.physics.upenn.edu | 0 | | |
| 128.91.43.158 | conflict1.physics.upenn.edu | 0 | | |
| 128.91.43.159 | bula.physics.upenn.edu | 0 | | |
| 128.91.43.160 | aguirre03.physics.upenn.edu | 0 | | |
| 128.91.43.161 | birdsville.physics.upenn.edu | 0 | | |
| 128.91.43.162 | balamuth13.physics.upenn.edu | 0 | | |
| 128.91.43.163 | aguirre04.physics.upenn.edu | 0 | | |
| 128.91.43.164 | flux.physics.upenn.edu | 0 | | |
| 128.91.43.165 | wales01.physics.upenn.edu | 0 | | |
| 128.91.43.166 | chungli.physics.upenn.edu | 0 | | |
| 128.91.43.167 | kodos.physics.upenn.edu | 0 | | |
| 128.91.43.168 | nankang.physics.upenn.edu | 0 | | |
| 128.91.43.169 | agena.physics.upenn.edu | 0 | | |
| 128.91.43.170 | gravity.physics.upenn.edu | 0 | | |
| 128.91.43.171 | shuili.physics.upenn.edu | 0 | | |
| 128.91.43.172 | halverson.physics.upenn.edu | 0 | | |
| 128.91.43.173 | medphysprint.physics.upenn.edu | 0 | | |
| 128.91.43.174 | apollo.physics.upenn.edu | 0 | | |
| 128.91.43.175 | jupiter.physics.upenn.edu | 0 | | |
| 128.91.43.176 | astro.physics.upenn.edu | 0 | | |
| 128.91.43.177 | taipei.physics.upenn.edu | 0 | | |
| 128.91.43.178 | jiji.physics.upenn.edu | 0 | | |
| 128.91.43.179 | garybusbcdongle.physics.upenn.edu | 0 | | |
| 128.91.43.180 | c4n7.physics.upenn.edu | 0 | | |
| 128.91.43.181 | rhea.physics.upenn.edu | 0 | | |
| 128.91.43.182 | dsliski.physics.upenn.edu | 0 | | |
| 128.91.43.183 | mce1.physics.upenn.edu | 0 | | |
| 128.91.43.184 | 2c19a.physics.upenn.edu | 0 | | |
| 128.91.43.185 | cletus.physics.upenn.edu | 0 | | |
| 128.91.43.186 | pcn18-laptop.physics.upenn.edu | 0 | | |
| 128.91.43.187 | mariano.physics.upenn.edu | 0 | | |
| 128.91.43.188 | diu.physics.upenn.edu | 0 | | |
| 128.91.43.189 | toby.physics.upenn.edu | 0 | | |
| 128.91.43.190 | vela.physics.upenn.edu | 0 | | |
| 128.91.43.191 | truch.physics.upenn.edu | 0 | | |
| 128.91.43.192 | citius.physics.upenn.edu | 0 | | |
| 128.91.43.193 | 2n4.physics.upenn.edu | 0 | | |
| 128.91.43.194 | ishii.physics.upenn.edu | 0 | | |
| 128.91.43.195 | orbonne.physics.upenn.edu | 0 | | |
| 128.91.43.196 | hp2c7.physics.upenn.edu | 0 | | |
| 128.91.43.197 | phys-zoo.physics.upenn.edu | 0 | | |
| 128.91.43.198 | static2.physics.upenn.edu | 0 | | |
| 128.91.43.199 | goulian.physics.upenn.edu | 0 | | |
| 128.91.43.200 | drndic-lab06.physics.upenn.edu | 0 | | |
| 128.91.43.201 | sas-b13ssw1.physics.upenn.edu | 0 | | |
| 128.91.43.202 | pot0-test.physics.upenn.edu | 0 | | |
| 128.91.43.203 | drndiclab19.physics.upenn.edu | 0 | | |
| 128.91.43.204 | static1.physics.upenn.edu | 0 | | |
| 128.91.43.205 | static3.physics.upenn.edu | 0 | | |
| 128.91.43.206 | apu.physics.upenn.edu | 0 | | |
| 128.91.43.207 | frink.physics.upenn.edu | 0 | | |
| 128.91.43.208 | alpha.physics.upenn.edu | 0 | | |
| 128.91.43.209 | otto.physics.upenn.edu | 0 | | |
| 128.91.43.210 | hadar.physics.upenn.edu | 0 | | |
| 128.91.43.211 | tom.physics.upenn.edu | 0 | | |
| 128.91.43.212 | gradlabmac.physics.upenn.edu | 0 | | |
| 128.91.43.213 | gradlabpc1.physics.upenn.edu | 0 | | |
| 128.91.43.214 | aoki.physics.upenn.edu | 0 | | |
| 128.91.43.215 | kulynych.physics.upenn.edu | 0 | | |
| 128.91.43.216 | 1n14.physics.upenn.edu | 0 | | |
| 128.91.43.217 | johnsonlablaptop1.physics.upenn.edu | 0 | | |
| 128.91.43.218 | lp2n46.physics.upenn.edu | 0 | | |
| 128.91.43.219 | 2c19b.physics.upenn.edu | 0 | | |
| 128.91.43.220 | puppis.physics.upenn.edu | 0 | | |
| 128.91.43.221 | mce3.physics.upenn.edu | 0 | | |
| 128.91.43.222 | 1n19-printer.physics.upenn.edu | 0 | | |
| 128.91.43.223 | mosher.physics.upenn.edu | 0 | | |
| 128.91.43.224 | vish15.physics.upenn.edu | 0 | | |
| 128.91.43.225 | titan.physics.upenn.edu | 0 | | |
| 128.91.43.226 | bepi.physics.upenn.edu | 0 | | |
| 128.91.43.227 | astro2.physics.upenn.edu | 0 | | |
| 128.91.43.228 | wulab5.physics.upenn.edu | 0 | | |
| 128.91.43.229 | gassensor21.physics.upenn.edu | 0 | | |
| 128.91.43.230 | sas-wulab253-wd.sas.upenn.edu | 0 | | |
| 128.91.43.231 | lsomers.physics.upenn.edu | 0 | | |
| 128.91.43.232 | hp2e11.physics.upenn.edu | 0 | | |
| 128.91.43.233 | yodh-22a.math.upenn.edu | 0 | | |
| 128.91.43.234 | milli.physics.upenn.edu | 0 | | |
| 128.91.43.235 | sas-br1kz24-wd.sas.upenn.edu | 0 | | |
| 128.91.43.236 | szechuan.physics.upenn.edu | 0 | | |
| 128.91.43.237 | fechner19.physics.upenn.edu | 0 | | |
| 128.91.43.238 | uniblab.physics.upenn.edu | 0 | | |
| 128.91.43.239 | pharnish14.physics.upenn.edu | 0 | | |
| 128.91.43.240 | obrero.physics.upenn.edu | 0 | | |
| 128.91.43.241 | robynes20.physics.upenn.edu | 0 | | |
| 128.91.43.242 | betelgeuse.physics.upenn.edu | 0 | | |
| 128.91.43.243 | bandido.physics.upenn.edu | 0 | | |
| 128.91.43.244 | aguirre01.physics.upenn.edu | 0 | | |
| 128.91.43.245 | chile3.physics.upenn.edu | 0 | | |
| 128.91.43.246 | 2e11lj.physics.upenn.edu | 0 | | |
| 128.91.43.247 | manwe.physics.upenn.edu | 0 | | |
| 128.91.43.248 | jhancock01.physics.upenn.edu | 0 | | |
| 128.91.43.249 | hborders18.physics.upenn.edu | 0 | | |
| 128.91.43.250 | fortius.physics.upenn.edu | 0 | | |
| 128.91.43.251 | jhancock02.physics.upenn.edu | 0 | | |
| 128.91.43.252 | aguirre02.physics.upenn.edu | 0 | | |
| 128.91.43.253 | kane13.physics.upenn.edu | 0 | | |
| 128.91.43.254 | nscp80.physics.upenn.edu | 0 | | |
| 128.91.43.255 | lande3.physics.upenn.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 -f5 128.91.43.104
traceroute to 128.91.43.104 (128.91.43.104): 64 hops max, 52 byte packets
10 *
11 *
12 *
13 *
Measurement taken from 
IPinfo ProbeNet in New York City, US
IPinfo ProbeNet in New York City, USOn