IPアドレスから地理的位置情報(GeoIPLocation)の検索機能を公開しました。
CIDRをIPアドレスに展開ツール v2.0.3
IPv4形式のIPアドレスは192.168.0.1などの一般的な形式だけでなく、
192.168.0.1/24 などのネットマスク指定(/24部分)による範囲指定なども利用ができます。
これはCIDR形式、プレフィックス指定などとも呼ばれています。
ここではこのネットマスク指定によるIPアドレス範囲をIPアドレスに展開して表示します。
以下に、ネットマスク形式のIPアドレスを入力すると、
下部に対して、CIDR指定に含まれるIPアドレスが表示されます。
また範囲が広く、含まれるIPアドレスが多い場合には、
結果は「xxx.xxx.xxx.xxx – xxx.xxx.xxx.xxx」形式の範囲で表示します。
範囲表示された場合は、リンクをクリックすると範囲内のIPを再展開できます。
目次
CIDR形式 (31.170.244.0/23) から範囲内のIPアドレス展開
表示値でそのまま実行するとデモ動作の確認ができます。
CIDR展開情報
入力されたCIDRのネットワーク情報です。
| 属性 | 値 |
|---|---|
| 入力IP範囲 | 31.170.244.0/23 |
| ネットワーク(CIDR) | 31.170.244.0/23 |
| サブネット表記 | 31.170.244.0/255.255.254.0 |
| 短縮表記 | 31.170.244 |
| IPアドレス範囲 | 31.170.244.0 - 31.170.245.255 |
| IPアドレス総数 | 512 |
| ネットワークIP | 31.170.244.0 |
| ブロードキャストIP | 31.170.245.255 |
| ホストアドレス範囲 | 31.170.244.1 - 31.170.245.254 有効ホスト数( 510 台 ) |
| サブネットマスク | 255.255.254.0 |
| クラス属性 | クラスＡ |
IPアドレスの展開結果
IPアドレスの展開を行いました
| No | IPアドレス範囲 |
|---|---|
| 1 | 31.170.244.0 |
| 2 | 31.170.244.1 |
| 3 | 31.170.244.2 |
| 4 | 31.170.244.3 |
| 5 | 31.170.244.4 |
| 6 | 31.170.244.5 |
| 7 | 31.170.244.6 |
| 8 | 31.170.244.7 |
| 9 | 31.170.244.8 |
| 10 | 31.170.244.9 |
| 11 | 31.170.244.10 |
| 12 | 31.170.244.11 |
| 13 | 31.170.244.12 |
| 14 | 31.170.244.13 |
| 15 | 31.170.244.14 |
| 16 | 31.170.244.15 |
| 17 | 31.170.244.16 |
| 18 | 31.170.244.17 |
| 19 | 31.170.244.18 |
| 20 | 31.170.244.19 |
| 21 | 31.170.244.20 |
| 22 | 31.170.244.21 |
| 23 | 31.170.244.22 |
| 24 | 31.170.244.23 |
| 25 | 31.170.244.24 |
| 26 | 31.170.244.25 |
| 27 | 31.170.244.26 |
| 28 | 31.170.244.27 |
| 29 | 31.170.244.28 |
| 30 | 31.170.244.29 |
| 31 | 31.170.244.30 |
| 32 | 31.170.244.31 |
| 33 | 31.170.244.32 |
| 34 | 31.170.244.33 |
| 35 | 31.170.244.34 |
| 36 | 31.170.244.35 |
| 37 | 31.170.244.36 |
| 38 | 31.170.244.37 |
| 39 | 31.170.244.38 |
| 40 | 31.170.244.39 |
| 41 | 31.170.244.40 |
| 42 | 31.170.244.41 |
| 43 | 31.170.244.42 |
| 44 | 31.170.244.43 |
| 45 | 31.170.244.44 |
| 46 | 31.170.244.45 |
| 47 | 31.170.244.46 |
| 48 | 31.170.244.47 |
| 49 | 31.170.244.48 |
| 50 | 31.170.244.49 |
| 51 | 31.170.244.50 |
| 52 | 31.170.244.51 |
| 53 | 31.170.244.52 |
| 54 | 31.170.244.53 |
| 55 | 31.170.244.54 |
| 56 | 31.170.244.55 |
| 57 | 31.170.244.56 |
| 58 | 31.170.244.57 |
| 59 | 31.170.244.58 |
| 60 | 31.170.244.59 |
| 61 | 31.170.244.60 |
| 62 | 31.170.244.61 |
| 63 | 31.170.244.62 |
| 64 | 31.170.244.63 |
| 65 | 31.170.244.64 |
| 66 | 31.170.244.65 |
| 67 | 31.170.244.66 |
| 68 | 31.170.244.67 |
| 69 | 31.170.244.68 |
| 70 | 31.170.244.69 |
| 71 | 31.170.244.70 |
| 72 | 31.170.244.71 |
| 73 | 31.170.244.72 |
| 74 | 31.170.244.73 |
| 75 | 31.170.244.74 |
| 76 | 31.170.244.75 |
| 77 | 31.170.244.76 |
| 78 | 31.170.244.77 |
| 79 | 31.170.244.78 |
| 80 | 31.170.244.79 |
| 81 | 31.170.244.80 |
| 82 | 31.170.244.81 |
| 83 | 31.170.244.82 |
| 84 | 31.170.244.83 |
| 85 | 31.170.244.84 |
| 86 | 31.170.244.85 |
| 87 | 31.170.244.86 |
| 88 | 31.170.244.87 |
| 89 | 31.170.244.88 |
| 90 | 31.170.244.89 |
| 91 | 31.170.244.90 |
| 92 | 31.170.244.91 |
| 93 | 31.170.244.92 |
| 94 | 31.170.244.93 |
| 95 | 31.170.244.94 |
| 96 | 31.170.244.95 |
| 97 | 31.170.244.96 |
| 98 | 31.170.244.97 |
| 99 | 31.170.244.98 |
| 100 | 31.170.244.99 |
| 101 | 31.170.244.100 |
| 102 | 31.170.244.101 |
| 103 | 31.170.244.102 |
| 104 | 31.170.244.103 |
| 105 | 31.170.244.104 |
| 106 | 31.170.244.105 |
| 107 | 31.170.244.106 |
| 108 | 31.170.244.107 |
| 109 | 31.170.244.108 |
| 110 | 31.170.244.109 |
| 111 | 31.170.244.110 |
| 112 | 31.170.244.111 |
| 113 | 31.170.244.112 |
| 114 | 31.170.244.113 |
| 115 | 31.170.244.114 |
| 116 | 31.170.244.115 |
| 117 | 31.170.244.116 |
| 118 | 31.170.244.117 |
| 119 | 31.170.244.118 |
| 120 | 31.170.244.119 |
| 121 | 31.170.244.120 |
| 122 | 31.170.244.121 |
| 123 | 31.170.244.122 |
| 124 | 31.170.244.123 |
| 125 | 31.170.244.124 |
| 126 | 31.170.244.125 |
| 127 | 31.170.244.126 |
| 128 | 31.170.244.127 |
| 129 | 31.170.244.128 |
| 130 | 31.170.244.129 |
| 131 | 31.170.244.130 |
| 132 | 31.170.244.131 |
| 133 | 31.170.244.132 |
| 134 | 31.170.244.133 |
| 135 | 31.170.244.134 |
| 136 | 31.170.244.135 |
| 137 | 31.170.244.136 |
| 138 | 31.170.244.137 |
| 139 | 31.170.244.138 |
| 140 | 31.170.244.139 |
| 141 | 31.170.244.140 |
| 142 | 31.170.244.141 |
| 143 | 31.170.244.142 |
| 144 | 31.170.244.143 |
| 145 | 31.170.244.144 |
| 146 | 31.170.244.145 |
| 147 | 31.170.244.146 |
| 148 | 31.170.244.147 |
| 149 | 31.170.244.148 |
| 150 | 31.170.244.149 |
| 151 | 31.170.244.150 |
| 152 | 31.170.244.151 |
| 153 | 31.170.244.152 |
| 154 | 31.170.244.153 |
| 155 | 31.170.244.154 |
| 156 | 31.170.244.155 |
| 157 | 31.170.244.156 |
| 158 | 31.170.244.157 |
| 159 | 31.170.244.158 |
| 160 | 31.170.244.159 |
| 161 | 31.170.244.160 |
| 162 | 31.170.244.161 |
| 163 | 31.170.244.162 |
| 164 | 31.170.244.163 |
| 165 | 31.170.244.164 |
| 166 | 31.170.244.165 |
| 167 | 31.170.244.166 |
| 168 | 31.170.244.167 |
| 169 | 31.170.244.168 |
| 170 | 31.170.244.169 |
| 171 | 31.170.244.170 |
| 172 | 31.170.244.171 |
| 173 | 31.170.244.172 |
| 174 | 31.170.244.173 |
| 175 | 31.170.244.174 |
| 176 | 31.170.244.175 |
| 177 | 31.170.244.176 |
| 178 | 31.170.244.177 |
| 179 | 31.170.244.178 |
| 180 | 31.170.244.179 |
| 181 | 31.170.244.180 |
| 182 | 31.170.244.181 |
| 183 | 31.170.244.182 |
| 184 | 31.170.244.183 |
| 185 | 31.170.244.184 |
| 186 | 31.170.244.185 |
| 187 | 31.170.244.186 |
| 188 | 31.170.244.187 |
| 189 | 31.170.244.188 |
| 190 | 31.170.244.189 |
| 191 | 31.170.244.190 |
| 192 | 31.170.244.191 |
| 193 | 31.170.244.192 |
| 194 | 31.170.244.193 |
| 195 | 31.170.244.194 |
| 196 | 31.170.244.195 |
| 197 | 31.170.244.196 |
| 198 | 31.170.244.197 |
| 199 | 31.170.244.198 |
| 200 | 31.170.244.199 |
| 201 | 31.170.244.200 |
| 202 | 31.170.244.201 |
| 203 | 31.170.244.202 |
| 204 | 31.170.244.203 |
| 205 | 31.170.244.204 |
| 206 | 31.170.244.205 |
| 207 | 31.170.244.206 |
| 208 | 31.170.244.207 |
| 209 | 31.170.244.208 |
| 210 | 31.170.244.209 |
| 211 | 31.170.244.210 |
| 212 | 31.170.244.211 |
| 213 | 31.170.244.212 |
| 214 | 31.170.244.213 |
| 215 | 31.170.244.214 |
| 216 | 31.170.244.215 |
| 217 | 31.170.244.216 |
| 218 | 31.170.244.217 |
| 219 | 31.170.244.218 |
| 220 | 31.170.244.219 |
| 221 | 31.170.244.220 |
| 222 | 31.170.244.221 |
| 223 | 31.170.244.222 |
| 224 | 31.170.244.223 |
| 225 | 31.170.244.224 |
| 226 | 31.170.244.225 |
| 227 | 31.170.244.226 |
| 228 | 31.170.244.227 |
| 229 | 31.170.244.228 |
| 230 | 31.170.244.229 |
| 231 | 31.170.244.230 |
| 232 | 31.170.244.231 |
| 233 | 31.170.244.232 |
| 234 | 31.170.244.233 |
| 235 | 31.170.244.234 |
| 236 | 31.170.244.235 |
| 237 | 31.170.244.236 |
| 238 | 31.170.244.237 |
| 239 | 31.170.244.238 |
| 240 | 31.170.244.239 |
| 241 | 31.170.244.240 |
| 242 | 31.170.244.241 |
| 243 | 31.170.244.242 |
| 244 | 31.170.244.243 |
| 245 | 31.170.244.244 |
| 246 | 31.170.244.245 |
| 247 | 31.170.244.246 |
| 248 | 31.170.244.247 |
| 249 | 31.170.244.248 |
| 250 | 31.170.244.249 |
| 251 | 31.170.244.250 |
| 252 | 31.170.244.251 |
| 253 | 31.170.244.252 |
| 254 | 31.170.244.253 |
| 255 | 31.170.244.254 |
| 256 | 31.170.244.255 |
| 257 | 31.170.245.0 |
| 258 | 31.170.245.1 |
| 259 | 31.170.245.2 |
| 260 | 31.170.245.3 |
| 261 | 31.170.245.4 |
| 262 | 31.170.245.5 |
| 263 | 31.170.245.6 |
| 264 | 31.170.245.7 |
| 265 | 31.170.245.8 |
| 266 | 31.170.245.9 |
| 267 | 31.170.245.10 |
| 268 | 31.170.245.11 |
| 269 | 31.170.245.12 |
| 270 | 31.170.245.13 |
| 271 | 31.170.245.14 |
| 272 | 31.170.245.15 |
| 273 | 31.170.245.16 |
| 274 | 31.170.245.17 |
| 275 | 31.170.245.18 |
| 276 | 31.170.245.19 |
| 277 | 31.170.245.20 |
| 278 | 31.170.245.21 |
| 279 | 31.170.245.22 |
| 280 | 31.170.245.23 |
| 281 | 31.170.245.24 |
| 282 | 31.170.245.25 |
| 283 | 31.170.245.26 |
| 284 | 31.170.245.27 |
| 285 | 31.170.245.28 |
| 286 | 31.170.245.29 |
| 287 | 31.170.245.30 |
| 288 | 31.170.245.31 |
| 289 | 31.170.245.32 |
| 290 | 31.170.245.33 |
| 291 | 31.170.245.34 |
| 292 | 31.170.245.35 |
| 293 | 31.170.245.36 |
| 294 | 31.170.245.37 |
| 295 | 31.170.245.38 |
| 296 | 31.170.245.39 |
| 297 | 31.170.245.40 |
| 298 | 31.170.245.41 |
| 299 | 31.170.245.42 |
| 300 | 31.170.245.43 |
| 301 | 31.170.245.44 |
| 302 | 31.170.245.45 |
| 303 | 31.170.245.46 |
| 304 | 31.170.245.47 |
| 305 | 31.170.245.48 |
| 306 | 31.170.245.49 |
| 307 | 31.170.245.50 |
| 308 | 31.170.245.51 |
| 309 | 31.170.245.52 |
| 310 | 31.170.245.53 |
| 311 | 31.170.245.54 |
| 312 | 31.170.245.55 |
| 313 | 31.170.245.56 |
| 314 | 31.170.245.57 |
| 315 | 31.170.245.58 |
| 316 | 31.170.245.59 |
| 317 | 31.170.245.60 |
| 318 | 31.170.245.61 |
| 319 | 31.170.245.62 |
| 320 | 31.170.245.63 |
| 321 | 31.170.245.64 |
| 322 | 31.170.245.65 |
| 323 | 31.170.245.66 |
| 324 | 31.170.245.67 |
| 325 | 31.170.245.68 |
| 326 | 31.170.245.69 |
| 327 | 31.170.245.70 |
| 328 | 31.170.245.71 |
| 329 | 31.170.245.72 |
| 330 | 31.170.245.73 |
| 331 | 31.170.245.74 |
| 332 | 31.170.245.75 |
| 333 | 31.170.245.76 |
| 334 | 31.170.245.77 |
| 335 | 31.170.245.78 |
| 336 | 31.170.245.79 |
| 337 | 31.170.245.80 |
| 338 | 31.170.245.81 |
| 339 | 31.170.245.82 |
| 340 | 31.170.245.83 |
| 341 | 31.170.245.84 |
| 342 | 31.170.245.85 |
| 343 | 31.170.245.86 |
| 344 | 31.170.245.87 |
| 345 | 31.170.245.88 |
| 346 | 31.170.245.89 |
| 347 | 31.170.245.90 |
| 348 | 31.170.245.91 |
| 349 | 31.170.245.92 |
| 350 | 31.170.245.93 |
| 351 | 31.170.245.94 |
| 352 | 31.170.245.95 |
| 353 | 31.170.245.96 |
| 354 | 31.170.245.97 |
| 355 | 31.170.245.98 |
| 356 | 31.170.245.99 |
| 357 | 31.170.245.100 |
| 358 | 31.170.245.101 |
| 359 | 31.170.245.102 |
| 360 | 31.170.245.103 |
| 361 | 31.170.245.104 |
| 362 | 31.170.245.105 |
| 363 | 31.170.245.106 |
| 364 | 31.170.245.107 |
| 365 | 31.170.245.108 |
| 366 | 31.170.245.109 |
| 367 | 31.170.245.110 |
| 368 | 31.170.245.111 |
| 369 | 31.170.245.112 |
| 370 | 31.170.245.113 |
| 371 | 31.170.245.114 |
| 372 | 31.170.245.115 |
| 373 | 31.170.245.116 |
| 374 | 31.170.245.117 |
| 375 | 31.170.245.118 |
| 376 | 31.170.245.119 |
| 377 | 31.170.245.120 |
| 378 | 31.170.245.121 |
| 379 | 31.170.245.122 |
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| 385 | 31.170.245.128 |
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| 389 | 31.170.245.132 |
| 390 | 31.170.245.133 |
| 391 | 31.170.245.134 |
| 392 | 31.170.245.135 |
| 393 | 31.170.245.136 |
| 394 | 31.170.245.137 |
| 395 | 31.170.245.138 |
| 396 | 31.170.245.139 |
| 397 | 31.170.245.140 |
| 398 | 31.170.245.141 |
| 399 | 31.170.245.142 |
| 400 | 31.170.245.143 |
| 401 | 31.170.245.144 |
| 402 | 31.170.245.145 |
| 403 | 31.170.245.146 |
| 404 | 31.170.245.147 |
| 405 | 31.170.245.148 |
| 406 | 31.170.245.149 |
| 407 | 31.170.245.150 |
| 408 | 31.170.245.151 |
| 409 | 31.170.245.152 |
| 410 | 31.170.245.153 |
| 411 | 31.170.245.154 |
| 412 | 31.170.245.155 |
| 413 | 31.170.245.156 |
| 414 | 31.170.245.157 |
| 415 | 31.170.245.158 |
| 416 | 31.170.245.159 |
| 417 | 31.170.245.160 |
| 418 | 31.170.245.161 |
| 419 | 31.170.245.162 |
| 420 | 31.170.245.163 |
| 421 | 31.170.245.164 |
| 422 | 31.170.245.165 |
| 423 | 31.170.245.166 |
| 424 | 31.170.245.167 |
| 425 | 31.170.245.168 |
| 426 | 31.170.245.169 |
| 427 | 31.170.245.170 |
| 428 | 31.170.245.171 |
| 429 | 31.170.245.172 |
| 430 | 31.170.245.173 |
| 431 | 31.170.245.174 |
| 432 | 31.170.245.175 |
| 433 | 31.170.245.176 |
| 434 | 31.170.245.177 |
| 435 | 31.170.245.178 |
| 436 | 31.170.245.179 |
| 437 | 31.170.245.180 |
| 438 | 31.170.245.181 |
| 439 | 31.170.245.182 |
| 440 | 31.170.245.183 |
| 441 | 31.170.245.184 |
| 442 | 31.170.245.185 |
| 443 | 31.170.245.186 |
| 444 | 31.170.245.187 |
| 445 | 31.170.245.188 |
| 446 | 31.170.245.189 |
| 447 | 31.170.245.190 |
| 448 | 31.170.245.191 |
| 449 | 31.170.245.192 |
| 450 | 31.170.245.193 |
| 451 | 31.170.245.194 |
| 452 | 31.170.245.195 |
| 453 | 31.170.245.196 |
| 454 | 31.170.245.197 |
| 455 | 31.170.245.198 |
| 456 | 31.170.245.199 |
| 457 | 31.170.245.200 |
| 458 | 31.170.245.201 |
| 459 | 31.170.245.202 |
| 460 | 31.170.245.203 |
| 461 | 31.170.245.204 |
| 462 | 31.170.245.205 |
| 463 | 31.170.245.206 |
| 464 | 31.170.245.207 |
| 465 | 31.170.245.208 |
| 466 | 31.170.245.209 |
| 467 | 31.170.245.210 |
| 468 | 31.170.245.211 |
| 469 | 31.170.245.212 |
| 470 | 31.170.245.213 |
| 471 | 31.170.245.214 |
| 472 | 31.170.245.215 |
| 473 | 31.170.245.216 |
| 474 | 31.170.245.217 |
| 475 | 31.170.245.218 |
| 476 | 31.170.245.219 |
| 477 | 31.170.245.220 |
| 478 | 31.170.245.221 |
| 479 | 31.170.245.222 |
| 480 | 31.170.245.223 |
| 481 | 31.170.245.224 |
| 482 | 31.170.245.225 |
| 483 | 31.170.245.226 |
| 484 | 31.170.245.227 |
| 485 | 31.170.245.228 |
| 486 | 31.170.245.229 |
| 487 | 31.170.245.230 |
| 488 | 31.170.245.231 |
| 489 | 31.170.245.232 |
| 490 | 31.170.245.233 |
| 491 | 31.170.245.234 |
| 492 | 31.170.245.235 |
| 493 | 31.170.245.236 |
| 494 | 31.170.245.237 |
| 495 | 31.170.245.238 |
| 496 | 31.170.245.239 |
| 497 | 31.170.245.240 |
| 498 | 31.170.245.241 |
| 499 | 31.170.245.242 |
| 500 | 31.170.245.243 |
| 501 | 31.170.245.244 |
| 502 | 31.170.245.245 |
| 503 | 31.170.245.246 |
| 504 | 31.170.245.247 |
| 505 | 31.170.245.248 |
| 506 | 31.170.245.249 |
| 507 | 31.170.245.250 |
| 508 | 31.170.245.251 |
| 509 | 31.170.245.252 |
| 510 | 31.170.245.253 |
| 511 | 31.170.245.254 |
| 512 | 31.170.245.255 |
IPアドレスの特殊属性
入力されたIPアドレス範囲の特殊IP属性に関する情報です。
特殊属性には該当しませんでした。
| IP特殊属性 | 概要 | CIDR |
|---|---|---|
| グローバルアドレス | プライベートIPアドレス、リンクローカルアドレス、特殊用途のIPアドレスなどを除いた |
GLOBALS |
IPアドレスの特殊属性に割当てられた
各範囲・グローバルIPアドレスの範囲については、
以下リンク先でご確認下さい。
このツールの使用方法については以下でご紹介しています。
関連ツール
このツールに関連してCIDRをすべて展開するのではなく、
CIDR範囲に１つのIPアドレスが含まれているかどうかを、
チェックして確認するツールを作成公開しました。
併せてご活用いただければ幸いです。
さいごに
CIDRからIPアドレスの範囲をイメージすることは、
慣れるまでは少しとっつきにくい部分もあります。
ここでは実際に範囲を目視して、
それぞれの範囲を細かく見ていくことができるようにしています。
お役に立ちますと幸いです。
更新履歴情報
| Ver. | 更新日 | 更新内容 |
|---|---|---|
| 2.0.3 | 2018/05/10 | /32指定を行った際にエラーになる不具合を訂正。 |
| 2.0.2 | 2018/05/10 | 実行結果に表示のIP範囲再展開リンクをJavaScriptからURL形式へ変更。 Shiftを押しながらクリック等することで別画面表示を可能にし、 URLから実行結果を開けるように対応。 |
| 2.0.1 | 2018/05/09 | 実行結果に表示のCIDR再展開リンクをJavaScriptからURL形式へ変更。 Shiftを押しながらクリック等することで別画面表示を可能にし、 URLから実行結果を開けるように対応。 |
| 1.0.2 | 2015/02/21 | 特定のネットマスクの値に対しての表示結果を調整 |
| 1.0.1 | 2015/02/06 | 公開 |
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