Summary
| ASN | AS104 University of Colorado at Boulder |
| BGP | 128.138.0.0/16 |
| IPs with RDNS | 252 |
| Hosted Domains | 0 |
| Pingable IPs | 0 |
| Router IPs | 0 |
| 128.138.57.0 | — | 0 |  | |
| 128.138.57.1 | res-gw-bcapb57.colorado.edu | 0 | | |
| 128.138.57.2 | — | 0 | | |
| 128.138.57.3 | — | 0 | | |
| 128.138.57.4 | bcapb57-4.colorado.edu | 0 | | |
| 128.138.57.5 | bcapb57-5-dhcp.colorado.edu | 0 | | |
| 128.138.57.6 | bcapb57-6-dhcp.colorado.edu | 0 | | |
| 128.138.57.7 | bcapb57-7-dhcp.colorado.edu | 0 | | |
| 128.138.57.8 | bcapb57-8-dhcp.colorado.edu | 0 | | |
| 128.138.57.9 | bcapb57-9-dhcp.colorado.edu | 0 | | |
| 128.138.57.10 | bcapb57-10-dhcp.colorado.edu | 0 | | |
| 128.138.57.11 | bcapb57-11-dhcp.colorado.edu | 0 | | |
| 128.138.57.12 | bcapb57-12-dhcp.colorado.edu | 0 | | |
| 128.138.57.13 | bcapb57-13-dhcp.colorado.edu | 0 | | |
| 128.138.57.14 | bcapb57-14-dhcp.colorado.edu | 0 | | |
| 128.138.57.15 | bcapb57-15-dhcp.colorado.edu | 0 | | |
| 128.138.57.16 | bcapb57-16-dhcp.colorado.edu | 0 | | |
| 128.138.57.17 | bcapb57-17-dhcp.colorado.edu | 0 | | |
| 128.138.57.18 | bcapb57-18-dhcp.colorado.edu | 0 | | |
| 128.138.57.19 | bcapb57-19-dhcp.colorado.edu | 0 | | |
| 128.138.57.20 | bcapb57-20-dhcp.colorado.edu | 0 | | |
| 128.138.57.21 | bcapb57-21-dhcp.colorado.edu | 0 | | |
| 128.138.57.22 | bcapb57-22-dhcp.colorado.edu | 0 | | |
| 128.138.57.23 | bcapb57-23-dhcp.colorado.edu | 0 | | |
| 128.138.57.24 | bcapb57-24-dhcp.colorado.edu | 0 | | |
| 128.138.57.25 | bcapb57-25-dhcp.colorado.edu | 0 | | |
| 128.138.57.26 | bcapb57-26-dhcp.colorado.edu | 0 | | |
| 128.138.57.27 | bcapb57-27-dhcp.colorado.edu | 0 | | |
| 128.138.57.28 | bcapb57-28-dhcp.colorado.edu | 0 | | |
| 128.138.57.29 | bcapb57-29-dhcp.colorado.edu | 0 | | |
| 128.138.57.30 | bcapb57-30-dhcp.colorado.edu | 0 | | |
| 128.138.57.31 | bcapb57-31-dhcp.colorado.edu | 0 | | |
| 128.138.57.32 | bcapb57-32-dhcp.colorado.edu | 0 | | |
| 128.138.57.33 | bcapb57-33-dhcp.colorado.edu | 0 | | |
| 128.138.57.34 | bcapb57-34-dhcp.colorado.edu | 0 | | |
| 128.138.57.35 | bcapb57-35-dhcp.colorado.edu | 0 | | |
| 128.138.57.36 | bcapb57-36-dhcp.colorado.edu | 0 | | |
| 128.138.57.37 | bcapb57-37-dhcp.colorado.edu | 0 | | |
| 128.138.57.38 | bcapb57-38-dhcp.colorado.edu | 0 | | |
| 128.138.57.39 | bcapb57-39-dhcp.colorado.edu | 0 | | |
| 128.138.57.40 | bcapb57-40-dhcp.colorado.edu | 0 | | |
| 128.138.57.41 | bcapb57-41-dhcp.colorado.edu | 0 | | |
| 128.138.57.42 | bcapb57-42-dhcp.colorado.edu | 0 | | |
| 128.138.57.43 | bcapb57-43-dhcp.colorado.edu | 0 | | |
| 128.138.57.44 | bcapb57-44-dhcp.colorado.edu | 0 | | |
| 128.138.57.45 | bcapb57-45-dhcp.colorado.edu | 0 | | |
| 128.138.57.46 | bcapb57-46-dhcp.colorado.edu | 0 | | |
| 128.138.57.47 | bcapb57-47-dhcp.colorado.edu | 0 | | |
| 128.138.57.48 | bcapb57-48-dhcp.colorado.edu | 0 | | |
| 128.138.57.49 | bcapb57-49-dhcp.colorado.edu | 0 | | |
| 128.138.57.50 | bcapb57-50-dhcp.colorado.edu | 0 | | |
| 128.138.57.51 | bcapb57-51-dhcp.colorado.edu | 0 | | |
| 128.138.57.52 | bcapb57-52-dhcp.colorado.edu | 0 | | |
| 128.138.57.53 | bcapb57-53-dhcp.colorado.edu | 0 | | |
| 128.138.57.54 | bcapb57-54-dhcp.colorado.edu | 0 | | |
| 128.138.57.55 | bcapb57-55-dhcp.colorado.edu | 0 | | |
| 128.138.57.56 | bcapb57-56-dhcp.colorado.edu | 0 | | |
| 128.138.57.57 | bcapb57-57-dhcp.colorado.edu | 0 | | |
| 128.138.57.58 | bcapb57-58-dhcp.colorado.edu | 0 | | |
| 128.138.57.59 | bcapb57-59-dhcp.colorado.edu | 0 | | |
| 128.138.57.60 | bcapb57-60-dhcp.colorado.edu | 0 | | |
| 128.138.57.61 | bcapb57-61-dhcp.colorado.edu | 0 | | |
| 128.138.57.62 | bcapb57-62-dhcp.colorado.edu | 0 | | |
| 128.138.57.63 | bcapb57-63-dhcp.colorado.edu | 0 | | |
| 128.138.57.64 | bcapb57-64-dhcp.colorado.edu | 0 | | |
| 128.138.57.65 | bcapb57-65-dhcp.colorado.edu | 0 | | |
| 128.138.57.66 | bcapb57-66-dhcp.colorado.edu | 0 | | |
| 128.138.57.67 | bcapb57-67-dhcp.colorado.edu | 0 | | |
| 128.138.57.68 | bcapb57-68-dhcp.colorado.edu | 0 | | |
| 128.138.57.69 | bcapb57-69-dhcp.colorado.edu | 0 | | |
| 128.138.57.70 | bcapb57-70-dhcp.colorado.edu | 0 | | |
| 128.138.57.71 | bcapb57-71-dhcp.colorado.edu | 0 | | |
| 128.138.57.72 | bcapb57-72-dhcp.colorado.edu | 0 | | |
| 128.138.57.73 | bcapb57-73-dhcp.colorado.edu | 0 | | |
| 128.138.57.74 | bcapb57-74-dhcp.colorado.edu | 0 | | |
| 128.138.57.75 | bcapb57-75-dhcp.colorado.edu | 0 | | |
| 128.138.57.76 | bcapb57-76-dhcp.colorado.edu | 0 | | |
| 128.138.57.77 | bcapb57-77-dhcp.colorado.edu | 0 | | |
| 128.138.57.78 | bcapb57-78-dhcp.colorado.edu | 0 | | |
| 128.138.57.79 | bcapb57-79-dhcp.colorado.edu | 0 | | |
| 128.138.57.80 | bcapb57-80-dhcp.colorado.edu | 0 | | |
| 128.138.57.81 | bcapb57-81-dhcp.colorado.edu | 0 | | |
| 128.138.57.82 | bcapb57-82-dhcp.colorado.edu | 0 | | |
| 128.138.57.83 | bcapb57-83-dhcp.colorado.edu | 0 | | |
| 128.138.57.84 | bcapb57-84-dhcp.colorado.edu | 0 | | |
| 128.138.57.85 | bcapb57-85-dhcp.colorado.edu | 0 | | |
| 128.138.57.86 | bcapb57-86-dhcp.colorado.edu | 0 | | |
| 128.138.57.87 | bcapb57-87-dhcp.colorado.edu | 0 | | |
| 128.138.57.88 | bcapb57-88-dhcp.colorado.edu | 0 | | |
| 128.138.57.89 | bcapb57-89-dhcp.colorado.edu | 0 | | |
| 128.138.57.90 | bcapb57-90-dhcp.colorado.edu | 0 | | |
| 128.138.57.91 | bcapb57-91-dhcp.colorado.edu | 0 | | |
| 128.138.57.92 | bcapb57-92-dhcp.colorado.edu | 0 | | |
| 128.138.57.93 | bcapb57-93-dhcp.colorado.edu | 0 | | |
| 128.138.57.94 | bcapb57-94-dhcp.colorado.edu | 0 | | |
| 128.138.57.95 | bcapb57-95-dhcp.colorado.edu | 0 | | |
| 128.138.57.96 | bcapb57-96-dhcp.colorado.edu | 0 | | |
| 128.138.57.97 | bcapb57-97-dhcp.colorado.edu | 0 | | |
| 128.138.57.98 | bcapb57-98-dhcp.colorado.edu | 0 | | |
| 128.138.57.99 | bcapb57-99-dhcp.colorado.edu | 0 | | |
| 128.138.57.100 | bcapb57-100-dhcp.colorado.edu | 0 | | |
| 128.138.57.101 | bcapb57-101-dhcp.colorado.edu | 0 | | |
| 128.138.57.102 | bcapb57-102-dhcp.colorado.edu | 0 | | |
| 128.138.57.103 | bcapb57-103-dhcp.colorado.edu | 0 | | |
| 128.138.57.104 | bcapb57-104-dhcp.colorado.edu | 0 | | |
| 128.138.57.105 | bcapb57-105-dhcp.colorado.edu | 0 | | |
| 128.138.57.106 | bcapb57-106-dhcp.colorado.edu | 0 | | |
| 128.138.57.107 | bcapb57-107-dhcp.colorado.edu | 0 | | |
| 128.138.57.108 | bcapb57-108-dhcp.colorado.edu | 0 | | |
| 128.138.57.109 | bcapb57-109-dhcp.colorado.edu | 0 | | |
| 128.138.57.110 | bcapb57-110-dhcp.colorado.edu | 0 | | |
| 128.138.57.111 | bcapb57-111-dhcp.colorado.edu | 0 | | |
| 128.138.57.112 | bcapb57-112-dhcp.colorado.edu | 0 | | |
| 128.138.57.113 | bcapb57-113-dhcp.colorado.edu | 0 | | |
| 128.138.57.114 | bcapb57-114-dhcp.colorado.edu | 0 | | |
| 128.138.57.115 | bcapb57-115-dhcp.colorado.edu | 0 | | |
| 128.138.57.116 | bcapb57-116-dhcp.colorado.edu | 0 | | |
| 128.138.57.117 | bcapb57-117-dhcp.colorado.edu | 0 | | |
| 128.138.57.118 | bcapb57-118-dhcp.colorado.edu | 0 | | |
| 128.138.57.119 | bcapb57-119-dhcp.colorado.edu | 0 | | |
| 128.138.57.120 | bcapb57-120-dhcp.colorado.edu | 0 | | |
| 128.138.57.121 | bcapb57-121-dhcp.colorado.edu | 0 | | |
| 128.138.57.122 | bcapb57-122-dhcp.colorado.edu | 0 | | |
| 128.138.57.123 | bcapb57-123-dhcp.colorado.edu | 0 | | |
| 128.138.57.124 | bcapb57-124-dhcp.colorado.edu | 0 | | |
| 128.138.57.125 | bcapb57-125-dhcp.colorado.edu | 0 | | |
| 128.138.57.126 | bcapb57-126-dhcp.colorado.edu | 0 | | |
| 128.138.57.127 | bcapb57-127-dhcp.colorado.edu | 0 | | |
| 128.138.57.128 | bcapb57-128-dhcp.colorado.edu | 0 | | |
| 128.138.57.129 | bcapb57-129-dhcp.colorado.edu | 0 | | |
| 128.138.57.130 | bcapb57-130-dhcp.colorado.edu | 0 | | |
| 128.138.57.131 | bcapb57-131-dhcp.colorado.edu | 0 | | |
| 128.138.57.132 | bcapb57-132-dhcp.colorado.edu | 0 | | |
| 128.138.57.133 | bcapb57-133-dhcp.colorado.edu | 0 | | |
| 128.138.57.134 | bcapb57-134-dhcp.colorado.edu | 0 | | |
| 128.138.57.135 | bcapb57-135-dhcp.colorado.edu | 0 | | |
| 128.138.57.136 | bcapb57-136-dhcp.colorado.edu | 0 | | |
| 128.138.57.137 | bcapb57-137-dhcp.colorado.edu | 0 | | |
| 128.138.57.138 | bcapb57-138-dhcp.colorado.edu | 0 | | |
| 128.138.57.139 | bcapb57-139-dhcp.colorado.edu | 0 | | |
| 128.138.57.140 | bcapb57-140-dhcp.colorado.edu | 0 | | |
| 128.138.57.141 | bcapb57-141-dhcp.colorado.edu | 0 | | |
| 128.138.57.142 | bcapb57-142-dhcp.colorado.edu | 0 | | |
| 128.138.57.143 | bcapb57-143-dhcp.colorado.edu | 0 | | |
| 128.138.57.144 | bcapb57-144-dhcp.colorado.edu | 0 | | |
| 128.138.57.145 | bcapb57-145-dhcp.colorado.edu | 0 | | |
| 128.138.57.146 | bcapb57-146-dhcp.colorado.edu | 0 | | |
| 128.138.57.147 | bcapb57-147-dhcp.colorado.edu | 0 | | |
| 128.138.57.148 | bcapb57-148-dhcp.colorado.edu | 0 | | |
| 128.138.57.149 | bcapb57-149-dhcp.colorado.edu | 0 | | |
| 128.138.57.150 | bcapb57-150-dhcp.colorado.edu | 0 | | |
| 128.138.57.151 | bcapb57-151-dhcp.colorado.edu | 0 | | |
| 128.138.57.152 | bcapb57-152-dhcp.colorado.edu | 0 | | |
| 128.138.57.153 | bcapb57-153-dhcp.colorado.edu | 0 | | |
| 128.138.57.154 | bcapb57-154-dhcp.colorado.edu | 0 | | |
| 128.138.57.155 | bcapb57-155-dhcp.colorado.edu | 0 | | |
| 128.138.57.156 | bcapb57-156-dhcp.colorado.edu | 0 | | |
| 128.138.57.157 | bcapb57-157-dhcp.colorado.edu | 0 | | |
| 128.138.57.158 | bcapb57-158-dhcp.colorado.edu | 0 | | |
| 128.138.57.159 | bcapb57-159-dhcp.colorado.edu | 0 | | |
| 128.138.57.160 | bcapb57-160-dhcp.colorado.edu | 0 | | |
| 128.138.57.161 | bcapb57-161-dhcp.colorado.edu | 0 | | |
| 128.138.57.162 | bcapb57-162-dhcp.colorado.edu | 0 | | |
| 128.138.57.163 | bcapb57-163-dhcp.colorado.edu | 0 | | |
| 128.138.57.164 | bcapb57-164-dhcp.colorado.edu | 0 | | |
| 128.138.57.165 | bcapb57-165-dhcp.colorado.edu | 0 | | |
| 128.138.57.166 | bcapb57-166-dhcp.colorado.edu | 0 | | |
| 128.138.57.167 | bcapb57-167-dhcp.colorado.edu | 0 | | |
| 128.138.57.168 | bcapb57-168-dhcp.colorado.edu | 0 | | |
| 128.138.57.169 | bcapb57-169-dhcp.colorado.edu | 0 | | |
| 128.138.57.170 | bcapb57-170-dhcp.colorado.edu | 0 | | |
| 128.138.57.171 | bcapb57-171-dhcp.colorado.edu | 0 | | |
| 128.138.57.172 | bcapb57-172-dhcp.colorado.edu | 0 | | |
| 128.138.57.173 | bcapb57-173-dhcp.colorado.edu | 0 | | |
| 128.138.57.174 | bcapb57-174-dhcp.colorado.edu | 0 | | |
| 128.138.57.175 | bcapb57-175-dhcp.colorado.edu | 0 | | |
| 128.138.57.176 | bcapb57-176-dhcp.colorado.edu | 0 | | |
| 128.138.57.177 | bcapb57-177-dhcp.colorado.edu | 0 | | |
| 128.138.57.178 | bcapb57-178-dhcp.colorado.edu | 0 | | |
| 128.138.57.179 | bcapb57-179-dhcp.colorado.edu | 0 | | |
| 128.138.57.180 | bcapb57-180-dhcp.colorado.edu | 0 | | |
| 128.138.57.181 | bcapb57-181-dhcp.colorado.edu | 0 | | |
| 128.138.57.182 | bcapb57-182-dhcp.colorado.edu | 0 | | |
| 128.138.57.183 | bcapb57-183-dhcp.colorado.edu | 0 | | |
| 128.138.57.184 | bcapb57-184-dhcp.colorado.edu | 0 | | |
| 128.138.57.185 | bcapb57-185-dhcp.colorado.edu | 0 | | |
| 128.138.57.186 | bcapb57-186-dhcp.colorado.edu | 0 | | |
| 128.138.57.187 | bcapb57-187-dhcp.colorado.edu | 0 | | |
| 128.138.57.188 | bcapb57-188-dhcp.colorado.edu | 0 | | |
| 128.138.57.189 | bcapb57-189-dhcp.colorado.edu | 0 | | |
| 128.138.57.190 | bcapb57-190-dhcp.colorado.edu | 0 | | |
| 128.138.57.191 | bcapb57-191-dhcp.colorado.edu | 0 | | |
| 128.138.57.192 | bcapb57-192-dhcp.colorado.edu | 0 | | |
| 128.138.57.193 | bcapb57-193-dhcp.colorado.edu | 0 | | |
| 128.138.57.194 | bcapb57-194-dhcp.colorado.edu | 0 | | |
| 128.138.57.195 | bcapb57-195-dhcp.colorado.edu | 0 | | |
| 128.138.57.196 | bcapb57-196-dhcp.colorado.edu | 0 | | |
| 128.138.57.197 | bcapb57-197-dhcp.colorado.edu | 0 | | |
| 128.138.57.198 | bcapb57-198-dhcp.colorado.edu | 0 | | |
| 128.138.57.199 | bcapb57-199-dhcp.colorado.edu | 0 | | |
| 128.138.57.200 | bcapb57-200-dhcp.colorado.edu | 0 | | |
| 128.138.57.201 | bcapb57-201-dhcp.colorado.edu | 0 | | |
| 128.138.57.202 | bcapb57-202-dhcp.colorado.edu | 0 | | |
| 128.138.57.203 | bcapb57-203-dhcp.colorado.edu | 0 | | |
| 128.138.57.204 | bcapb57-204-dhcp.colorado.edu | 0 | | |
| 128.138.57.205 | bcapb57-205-dhcp.colorado.edu | 0 | | |
| 128.138.57.206 | bcapb57-206-dhcp.colorado.edu | 0 | | |
| 128.138.57.207 | bcapb57-207-dhcp.colorado.edu | 0 | | |
| 128.138.57.208 | bcapb57-208-dhcp.colorado.edu | 0 | | |
| 128.138.57.209 | bcapb57-209-dhcp.colorado.edu | 0 | | |
| 128.138.57.210 | bcapb57-210-dhcp.colorado.edu | 0 | | |
| 128.138.57.211 | bcapb57-211-dhcp.colorado.edu | 0 | | |
| 128.138.57.212 | bcapb57-212-dhcp.colorado.edu | 0 | | |
| 128.138.57.213 | bcapb57-213-dhcp.colorado.edu | 0 | | |
| 128.138.57.214 | bcapb57-214-dhcp.colorado.edu | 0 | | |
| 128.138.57.215 | bcapb57-215-dhcp.colorado.edu | 0 | | |
| 128.138.57.216 | bcapb57-216-dhcp.colorado.edu | 0 | | |
| 128.138.57.217 | bcapb57-217-dhcp.colorado.edu | 0 | | |
| 128.138.57.218 | bcapb57-218-dhcp.colorado.edu | 0 | | |
| 128.138.57.219 | bcapb57-219-dhcp.colorado.edu | 0 | | |
| 128.138.57.220 | bcapb57-220-dhcp.colorado.edu | 0 | | |
| 128.138.57.221 | bcapb57-221-dhcp.colorado.edu | 0 | | |
| 128.138.57.222 | bcapb57-222-dhcp.colorado.edu | 0 | | |
| 128.138.57.223 | bcapb57-223-dhcp.colorado.edu | 0 | | |
| 128.138.57.224 | bcapb57-224-dhcp.colorado.edu | 0 | | |
| 128.138.57.225 | bcapb57-225-dhcp.colorado.edu | 0 | | |
| 128.138.57.226 | bcapb57-226-dhcp.colorado.edu | 0 | | |
| 128.138.57.227 | bcapb57-227-dhcp.colorado.edu | 0 | | |
| 128.138.57.228 | bcapb57-228-dhcp.colorado.edu | 0 | | |
| 128.138.57.229 | bcapb57-229-dhcp.colorado.edu | 0 | | |
| 128.138.57.230 | bcapb57-230-dhcp.colorado.edu | 0 | | |
| 128.138.57.231 | bcapb57-231-dhcp.colorado.edu | 0 | | |
| 128.138.57.232 | bcapb57-232-dhcp.colorado.edu | 0 | | |
| 128.138.57.233 | bcapb57-233-dhcp.colorado.edu | 0 | | |
| 128.138.57.234 | bcapb57-234-dhcp.colorado.edu | 0 | | |
| 128.138.57.235 | bcapb57-235-dhcp.colorado.edu | 0 | | |
| 128.138.57.236 | bcapb57-236-dhcp.colorado.edu | 0 | | |
| 128.138.57.237 | bcapb57-237-dhcp.colorado.edu | 0 | | |
| 128.138.57.238 | bcapb57-238-dhcp.colorado.edu | 0 | | |
| 128.138.57.239 | bcapb57-239-dhcp.colorado.edu | 0 | | |
| 128.138.57.240 | bcapb57-240-dhcp.colorado.edu | 0 | | |
| 128.138.57.241 | bcapb57-241-dhcp.colorado.edu | 0 | | |
| 128.138.57.242 | bcapb57-242-dhcp.colorado.edu | 0 | | |
| 128.138.57.243 | bcapb57-243-dhcp.colorado.edu | 0 | | |
| 128.138.57.244 | bcapb57-244-dhcp.colorado.edu | 0 | | |
| 128.138.57.245 | bcapb57-245-dhcp.colorado.edu | 0 | | |
| 128.138.57.246 | bcapb57-246-dhcp.colorado.edu | 0 | | |
| 128.138.57.247 | bcapb57-247-dhcp.colorado.edu | 0 | | |
| 128.138.57.248 | bcapb57-248-dhcp.colorado.edu | 0 | | |
| 128.138.57.249 | bcapb57-249-dhcp.colorado.edu | 0 | | |
| 128.138.57.250 | bcapb57-250-dhcp.colorado.edu | 0 | | |
| 128.138.57.251 | bcapb57-251-dhcp.colorado.edu | 0 | | |
| 128.138.57.252 | bcapb57-252-dhcp.colorado.edu | 0 | | |
| 128.138.57.253 | bcapb57-253-dhcp.colorado.edu | 0 | | |
| 128.138.57.254 | bcapb57-254-dhcp.colorado.edu | 0 | | |
| 128.138.57.255 | — | 0 | | |
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
$
traceroute -a -n -q1 -m7 128.138.57.221
traceroute to 128.138.57.221 (128.138.57.221): 7 hops max, 52 byte packets
2 *
5 *
6 *
7 *
Measurement taken from 
IPinfo ProbeNet in Montreal, CA
IPinfo ProbeNet in Montreal, CAOn