Les adresses IP débutant par 81.158.43 sont fournies par BTnet UK Regional network, elles appartiennent au CIDR (Classless Inter-Domain Routing) 81.128.0.0/11, le bloc IP comprant les adresses de 81.128.0.0 à 81.159.255.255). Le numéro de système autonome (ASN) est 2856.
| ASN | 2856 |
| IP commençant par | 81.128.0.0 |
| IP se terminant par | 81.159.255.255 |
| Nom ASN | BTnet UK Regional network |
| CDIR | 81.128.0.0/11 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 03/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | GB | Royaume-Uni | - | Kyle of Lochalsh | 57,2839 | -5,7112 | 2017-08-03 |
| MaxMind | GB | Royaume-Uni | - | Kenmore | 56,5667 | -3,9833 | 2017-08-03 |
| Whois | GB | - | - | - | -3 | 55 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.158.43.0 | 1369320192 | 0 |
| 81.158.43.1 | 1369320193 | 0 |
| 81.158.43.2 | 1369320194 | 0 |
| 81.158.43.3 | 1369320195 | 0 |
| 81.158.43.4 | 1369320196 | 0 |
| 81.158.43.5 | 1369320197 | 0 |
| 81.158.43.6 | 1369320198 | 0 |
| 81.158.43.7 | 1369320199 | 0 |
| 81.158.43.8 | 1369320200 | 0 |
| 81.158.43.9 | 1369320201 | 0 |
| 81.158.43.10 | 1369320202 | 0 |
| 81.158.43.11 | 1369320203 | 0 |
| 81.158.43.12 | 1369320204 | 0 |
| 81.158.43.13 | 1369320205 | 0 |
| 81.158.43.14 | 1369320206 | 0 |
| 81.158.43.15 | 1369320207 | 0 |
| 81.158.43.16 | 1369320208 | 0 |
| 81.158.43.17 | 1369320209 | 0 |
| 81.158.43.18 | 1369320210 | 0 |
| 81.158.43.19 | 1369320211 | 0 |
| 81.158.43.20 | 1369320212 | 0 |
| 81.158.43.21 | 1369320213 | 0 |
| 81.158.43.22 | 1369320214 | 0 |
| 81.158.43.23 | 1369320215 | 0 |
| 81.158.43.24 | 1369320216 | 0 |
| 81.158.43.25 | 1369320217 | 0 |
| 81.158.43.26 | 1369320218 | 0 |
| 81.158.43.27 | 1369320219 | 0 |
| 81.158.43.28 | 1369320220 | 0 |
| 81.158.43.29 | 1369320221 | 0 |
| 81.158.43.30 | 1369320222 | 0 |
| 81.158.43.31 | 1369320223 | 0 |
| 81.158.43.32 | 1369320224 | 0 |
| 81.158.43.33 | 1369320225 | 0 |
| 81.158.43.34 | 1369320226 | 0 |
| 81.158.43.35 | 1369320227 | 0 |
| 81.158.43.36 | 1369320228 | 0 |
| 81.158.43.37 | 1369320229 | 0 |
| 81.158.43.38 | 1369320230 | 0 |
| 81.158.43.39 | 1369320231 | 0 |
| 81.158.43.40 | 1369320232 | 0 |
| 81.158.43.41 | 1369320233 | 0 |
| 81.158.43.42 | 1369320234 | 0 |
| 81.158.43.43 | 1369320235 | 0 |
| 81.158.43.44 | 1369320236 | 0 |
| 81.158.43.45 | 1369320237 | 0 |
| 81.158.43.46 | 1369320238 | 0 |
| 81.158.43.47 | 1369320239 | 0 |
| 81.158.43.48 | 1369320240 | 0 |
| 81.158.43.49 | 1369320241 | 0 |
| 81.158.43.50 | 1369320242 | 0 |
| 81.158.43.51 | 1369320243 | 0 |
| 81.158.43.52 | 1369320244 | 0 |
| 81.158.43.53 | 1369320245 | 0 |
| 81.158.43.54 | 1369320246 | 0 |
| 81.158.43.55 | 1369320247 | 0 |
| 81.158.43.56 | 1369320248 | 0 |
| 81.158.43.57 | 1369320249 | 0 |
| 81.158.43.58 | 1369320250 | 0 |
| 81.158.43.59 | 1369320251 | 0 |
| 81.158.43.60 | 1369320252 | 0 |
| 81.158.43.61 | 1369320253 | 0 |
| 81.158.43.62 | 1369320254 | 0 |
| 81.158.43.63 | 1369320255 | 0 |
| 81.158.43.64 | 1369320256 | 0 |
| 81.158.43.65 | 1369320257 | 0 |
| 81.158.43.66 | 1369320258 | 0 |
| 81.158.43.67 | 1369320259 | 0 |
| 81.158.43.68 | 1369320260 | 0 |
| 81.158.43.69 | 1369320261 | 0 |
| 81.158.43.70 | 1369320262 | 0 |
| 81.158.43.71 | 1369320263 | 0 |
| 81.158.43.72 | 1369320264 | 0 |
| 81.158.43.73 | 1369320265 | 0 |
| 81.158.43.74 | 1369320266 | 0 |
| 81.158.43.75 | 1369320267 | 0 |
| 81.158.43.76 | 1369320268 | 0 |
| 81.158.43.77 | 1369320269 | 0 |
| 81.158.43.78 | 1369320270 | 0 |
| 81.158.43.79 | 1369320271 | 0 |
| 81.158.43.80 | 1369320272 | 0 |
| 81.158.43.81 | 1369320273 | 0 |
| 81.158.43.82 | 1369320274 | 0 |
| 81.158.43.83 | 1369320275 | 0 |
| 81.158.43.84 | 1369320276 | 0 |
| 81.158.43.85 | 1369320277 | 0 |