The IP address 131.55.21 is provided by DoD Network Information Center, it's belong to the CDIR (Classless Inter-Domain Routing) 131.32.0.0/11 (range 131.32.0.0 to 131.63.255.255). The autonomous system number (ASN) is 721.
| ASN | 721 |
| IP starting by | 131.32.0.0 |
| IP ending by | 131.63.255.255 |
| ASN Name | DoD Network Information Center |
| CDIR | 131.32.0.0/11 |
| Numerical IP | |
| Registry | arin |
| Last update | 28/03/2020 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2020-03-28 |
| MaxMind | US | United States | - | Montgomery | 32.404 | -86.2539 | 2020-03-28 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 131.55.21.0 | 2201425152 | 0 |
| 131.55.21.1 | 2201425153 | 0 |
| 131.55.21.2 | 2201425154 | 0 |
| 131.55.21.3 | 2201425155 | 0 |
| 131.55.21.4 | 2201425156 | 0 |
| 131.55.21.5 | 2201425157 | 0 |
| 131.55.21.6 | 2201425158 | 0 |
| 131.55.21.7 | 2201425159 | 0 |
| 131.55.21.8 | 2201425160 | 0 |
| 131.55.21.9 | 2201425161 | 0 |
| 131.55.21.10 | 2201425162 | 0 |
| 131.55.21.11 | 2201425163 | 0 |
| 131.55.21.12 | 2201425164 | 0 |
| 131.55.21.13 | 2201425165 | 0 |
| 131.55.21.14 | 2201425166 | 0 |
| 131.55.21.15 | 2201425167 | 0 |
| 131.55.21.16 | 2201425168 | 0 |
| 131.55.21.17 | 2201425169 | 0 |
| 131.55.21.18 | 2201425170 | 0 |
| 131.55.21.19 | 2201425171 | 0 |
| 131.55.21.20 | 2201425172 | 0 |
| 131.55.21.21 | 2201425173 | 0 |
| 131.55.21.22 | 2201425174 | 0 |
| 131.55.21.23 | 2201425175 | 0 |
| 131.55.21.24 | 2201425176 | 0 |
| 131.55.21.25 | 2201425177 | 0 |
| 131.55.21.26 | 2201425178 | 0 |
| 131.55.21.27 | 2201425179 | 0 |
| 131.55.21.28 | 2201425180 | 0 |
| 131.55.21.29 | 2201425181 | 0 |
| 131.55.21.30 | 2201425182 | 0 |
| 131.55.21.31 | 2201425183 | 0 |
| 131.55.21.32 | 2201425184 | 0 |
| 131.55.21.33 | 2201425185 | 0 |
| 131.55.21.34 | 2201425186 | 0 |
| 131.55.21.35 | 2201425187 | 0 |
| 131.55.21.36 | 2201425188 | 0 |
| 131.55.21.37 | 2201425189 | 0 |
| 131.55.21.38 | 2201425190 | 0 |
| 131.55.21.39 | 2201425191 | 0 |
| 131.55.21.40 | 2201425192 | 0 |
| 131.55.21.41 | 2201425193 | 0 |
| 131.55.21.42 | 2201425194 | 0 |
| 131.55.21.43 | 2201425195 | 0 |
| 131.55.21.44 | 2201425196 | 0 |
| 131.55.21.45 | 2201425197 | 0 |
| 131.55.21.46 | 2201425198 | 0 |
| 131.55.21.47 | 2201425199 | 0 |
| 131.55.21.48 | 2201425200 | 0 |
| 131.55.21.49 | 2201425201 | 0 |
| 131.55.21.50 | 2201425202 | 0 |
| 131.55.21.51 | 2201425203 | 0 |
| 131.55.21.52 | 2201425204 | 0 |
| 131.55.21.53 | 2201425205 | 0 |
| 131.55.21.54 | 2201425206 | 0 |
| 131.55.21.55 | 2201425207 | 0 |
| 131.55.21.56 | 2201425208 | 0 |
| 131.55.21.57 | 2201425209 | 0 |
| 131.55.21.58 | 2201425210 | 0 |
| 131.55.21.59 | 2201425211 | 0 |
| 131.55.21.60 | 2201425212 | 0 |
| 131.55.21.61 | 2201425213 | 0 |
| 131.55.21.62 | 2201425214 | 0 |
| 131.55.21.63 | 2201425215 | 0 |
| 131.55.21.64 | 2201425216 | 0 |
| 131.55.21.65 | 2201425217 | 0 |
| 131.55.21.66 | 2201425218 | 0 |
| 131.55.21.67 | 2201425219 | 0 |
| 131.55.21.68 | 2201425220 | 0 |
| 131.55.21.69 | 2201425221 | 0 |
| 131.55.21.70 | 2201425222 | 0 |
| 131.55.21.71 | 2201425223 | 0 |
| 131.55.21.72 | 2201425224 | 0 |
| 131.55.21.73 | 2201425225 | 0 |
| 131.55.21.74 | 2201425226 | 0 |
| 131.55.21.75 | 2201425227 | 0 |
| 131.55.21.76 | 2201425228 | 0 |
| 131.55.21.77 | 2201425229 | 0 |
| 131.55.21.78 | 2201425230 | 0 |
| 131.55.21.79 | 2201425231 | 0 |
| 131.55.21.80 | 2201425232 | 0 |
| 131.55.21.81 | 2201425233 | 0 |
| 131.55.21.82 | 2201425234 | 0 |
| 131.55.21.83 | 2201425235 | 0 |
| 131.55.21.84 | 2201425236 | 0 |
| 131.55.21.85 | 2201425237 | 0 |