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 (172.87.120.0/23) 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 | 172.87.120.0/23 |
| ネットワーク(CIDR) | 172.87.120.0/23 |
| サブネット表記 | 172.87.120.0/255.255.254.0 |
| 短縮表記 | 172.87.120 |
| IPアドレス範囲 | 172.87.120.0 - 172.87.121.255 |
| IPアドレス総数 | 512 |
| ネットワークIP | 172.87.120.0 |
| ブロードキャストIP | 172.87.121.255 |
| ホストアドレス範囲 | 172.87.120.1 - 172.87.121.254 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Ｂ |
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 | 172.87.120.0 |
| 2 | 172.87.120.1 |
| 3 | 172.87.120.2 |
| 4 | 172.87.120.3 |
| 5 | 172.87.120.4 |
| 6 | 172.87.120.5 |
| 7 | 172.87.120.6 |
| 8 | 172.87.120.7 |
| 9 | 172.87.120.8 |
| 10 | 172.87.120.9 |
| 11 | 172.87.120.10 |
| 12 | 172.87.120.11 |
| 13 | 172.87.120.12 |
| 14 | 172.87.120.13 |
| 15 | 172.87.120.14 |
| 16 | 172.87.120.15 |
| 17 | 172.87.120.16 |
| 18 | 172.87.120.17 |
| 19 | 172.87.120.18 |
| 20 | 172.87.120.19 |
| 21 | 172.87.120.20 |
| 22 | 172.87.120.21 |
| 23 | 172.87.120.22 |
| 24 | 172.87.120.23 |
| 25 | 172.87.120.24 |
| 26 | 172.87.120.25 |
| 27 | 172.87.120.26 |
| 28 | 172.87.120.27 |
| 29 | 172.87.120.28 |
| 30 | 172.87.120.29 |
| 31 | 172.87.120.30 |
| 32 | 172.87.120.31 |
| 33 | 172.87.120.32 |
| 34 | 172.87.120.33 |
| 35 | 172.87.120.34 |
| 36 | 172.87.120.35 |
| 37 | 172.87.120.36 |
| 38 | 172.87.120.37 |
| 39 | 172.87.120.38 |
| 40 | 172.87.120.39 |
| 41 | 172.87.120.40 |
| 42 | 172.87.120.41 |
| 43 | 172.87.120.42 |
| 44 | 172.87.120.43 |
| 45 | 172.87.120.44 |
| 46 | 172.87.120.45 |
| 47 | 172.87.120.46 |
| 48 | 172.87.120.47 |
| 49 | 172.87.120.48 |
| 50 | 172.87.120.49 |
| 51 | 172.87.120.50 |
| 52 | 172.87.120.51 |
| 53 | 172.87.120.52 |
| 54 | 172.87.120.53 |
| 55 | 172.87.120.54 |
| 56 | 172.87.120.55 |
| 57 | 172.87.120.56 |
| 58 | 172.87.120.57 |
| 59 | 172.87.120.58 |
| 60 | 172.87.120.59 |
| 61 | 172.87.120.60 |
| 62 | 172.87.120.61 |
| 63 | 172.87.120.62 |
| 64 | 172.87.120.63 |
| 65 | 172.87.120.64 |
| 66 | 172.87.120.65 |
| 67 | 172.87.120.66 |
| 68 | 172.87.120.67 |
| 69 | 172.87.120.68 |
| 70 | 172.87.120.69 |
| 71 | 172.87.120.70 |
| 72 | 172.87.120.71 |
| 73 | 172.87.120.72 |
| 74 | 172.87.120.73 |
| 75 | 172.87.120.74 |
| 76 | 172.87.120.75 |
| 77 | 172.87.120.76 |
| 78 | 172.87.120.77 |
| 79 | 172.87.120.78 |
| 80 | 172.87.120.79 |
| 81 | 172.87.120.80 |
| 82 | 172.87.120.81 |
| 83 | 172.87.120.82 |
| 84 | 172.87.120.83 |
| 85 | 172.87.120.84 |
| 86 | 172.87.120.85 |
| 87 | 172.87.120.86 |
| 88 | 172.87.120.87 |
| 89 | 172.87.120.88 |
| 90 | 172.87.120.89 |
| 91 | 172.87.120.90 |
| 92 | 172.87.120.91 |
| 93 | 172.87.120.92 |
| 94 | 172.87.120.93 |
| 95 | 172.87.120.94 |
| 96 | 172.87.120.95 |
| 97 | 172.87.120.96 |
| 98 | 172.87.120.97 |
| 99 | 172.87.120.98 |
| 100 | 172.87.120.99 |
| 101 | 172.87.120.100 |
| 102 | 172.87.120.101 |
| 103 | 172.87.120.102 |
| 104 | 172.87.120.103 |
| 105 | 172.87.120.104 |
| 106 | 172.87.120.105 |
| 107 | 172.87.120.106 |
| 108 | 172.87.120.107 |
| 109 | 172.87.120.108 |
| 110 | 172.87.120.109 |
| 111 | 172.87.120.110 |
| 112 | 172.87.120.111 |
| 113 | 172.87.120.112 |
| 114 | 172.87.120.113 |
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| 141 | 172.87.120.140 |
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| 145 | 172.87.120.144 |
| 146 | 172.87.120.145 |
| 147 | 172.87.120.146 |
| 148 | 172.87.120.147 |
| 149 | 172.87.120.148 |
| 150 | 172.87.120.149 |
| 151 | 172.87.120.150 |
| 152 | 172.87.120.151 |
| 153 | 172.87.120.152 |
| 154 | 172.87.120.153 |
| 155 | 172.87.120.154 |
| 156 | 172.87.120.155 |
| 157 | 172.87.120.156 |
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| 159 | 172.87.120.158 |
| 160 | 172.87.120.159 |
| 161 | 172.87.120.160 |
| 162 | 172.87.120.161 |
| 163 | 172.87.120.162 |
| 164 | 172.87.120.163 |
| 165 | 172.87.120.164 |
| 166 | 172.87.120.165 |
| 167 | 172.87.120.166 |
| 168 | 172.87.120.167 |
| 169 | 172.87.120.168 |
| 170 | 172.87.120.169 |
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| 179 | 172.87.120.178 |
| 180 | 172.87.120.179 |
| 181 | 172.87.120.180 |
| 182 | 172.87.120.181 |
| 183 | 172.87.120.182 |
| 184 | 172.87.120.183 |
| 185 | 172.87.120.184 |
| 186 | 172.87.120.185 |
| 187 | 172.87.120.186 |
| 188 | 172.87.120.187 |
| 189 | 172.87.120.188 |
| 190 | 172.87.120.189 |
| 191 | 172.87.120.190 |
| 192 | 172.87.120.191 |
| 193 | 172.87.120.192 |
| 194 | 172.87.120.193 |
| 195 | 172.87.120.194 |
| 196 | 172.87.120.195 |
| 197 | 172.87.120.196 |
| 198 | 172.87.120.197 |
| 199 | 172.87.120.198 |
| 200 | 172.87.120.199 |
| 201 | 172.87.120.200 |
| 202 | 172.87.120.201 |
| 203 | 172.87.120.202 |
| 204 | 172.87.120.203 |
| 205 | 172.87.120.204 |
| 206 | 172.87.120.205 |
| 207 | 172.87.120.206 |
| 208 | 172.87.120.207 |
| 209 | 172.87.120.208 |
| 210 | 172.87.120.209 |
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| 213 | 172.87.120.212 |
| 214 | 172.87.120.213 |
| 215 | 172.87.120.214 |
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| 217 | 172.87.120.216 |
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| 223 | 172.87.120.222 |
| 224 | 172.87.120.223 |
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| 227 | 172.87.120.226 |
| 228 | 172.87.120.227 |
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| 232 | 172.87.120.231 |
| 233 | 172.87.120.232 |
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| 245 | 172.87.120.244 |
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| 248 | 172.87.120.247 |
| 249 | 172.87.120.248 |
| 250 | 172.87.120.249 |
| 251 | 172.87.120.250 |
| 252 | 172.87.120.251 |
| 253 | 172.87.120.252 |
| 254 | 172.87.120.253 |
| 255 | 172.87.120.254 |
| 256 | 172.87.120.255 |
| 257 | 172.87.121.0 |
| 258 | 172.87.121.1 |
| 259 | 172.87.121.2 |
| 260 | 172.87.121.3 |
| 261 | 172.87.121.4 |
| 262 | 172.87.121.5 |
| 263 | 172.87.121.6 |
| 264 | 172.87.121.7 |
| 265 | 172.87.121.8 |
| 266 | 172.87.121.9 |
| 267 | 172.87.121.10 |
| 268 | 172.87.121.11 |
| 269 | 172.87.121.12 |
| 270 | 172.87.121.13 |
| 271 | 172.87.121.14 |
| 272 | 172.87.121.15 |
| 273 | 172.87.121.16 |
| 274 | 172.87.121.17 |
| 275 | 172.87.121.18 |
| 276 | 172.87.121.19 |
| 277 | 172.87.121.20 |
| 278 | 172.87.121.21 |
| 279 | 172.87.121.22 |
| 280 | 172.87.121.23 |
| 281 | 172.87.121.24 |
| 282 | 172.87.121.25 |
| 283 | 172.87.121.26 |
| 284 | 172.87.121.27 |
| 285 | 172.87.121.28 |
| 286 | 172.87.121.29 |
| 287 | 172.87.121.30 |
| 288 | 172.87.121.31 |
| 289 | 172.87.121.32 |
| 290 | 172.87.121.33 |
| 291 | 172.87.121.34 |
| 292 | 172.87.121.35 |
| 293 | 172.87.121.36 |
| 294 | 172.87.121.37 |
| 295 | 172.87.121.38 |
| 296 | 172.87.121.39 |
| 297 | 172.87.121.40 |
| 298 | 172.87.121.41 |
| 299 | 172.87.121.42 |
| 300 | 172.87.121.43 |
| 301 | 172.87.121.44 |
| 302 | 172.87.121.45 |
| 303 | 172.87.121.46 |
| 304 | 172.87.121.47 |
| 305 | 172.87.121.48 |
| 306 | 172.87.121.49 |
| 307 | 172.87.121.50 |
| 308 | 172.87.121.51 |
| 309 | 172.87.121.52 |
| 310 | 172.87.121.53 |
| 311 | 172.87.121.54 |
| 312 | 172.87.121.55 |
| 313 | 172.87.121.56 |
| 314 | 172.87.121.57 |
| 315 | 172.87.121.58 |
| 316 | 172.87.121.59 |
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| 319 | 172.87.121.62 |
| 320 | 172.87.121.63 |
| 321 | 172.87.121.64 |
| 322 | 172.87.121.65 |
| 323 | 172.87.121.66 |
| 324 | 172.87.121.67 |
| 325 | 172.87.121.68 |
| 326 | 172.87.121.69 |
| 327 | 172.87.121.70 |
| 328 | 172.87.121.71 |
| 329 | 172.87.121.72 |
| 330 | 172.87.121.73 |
| 331 | 172.87.121.74 |
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| 333 | 172.87.121.76 |
| 334 | 172.87.121.77 |
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| 397 | 172.87.121.140 |
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| 399 | 172.87.121.142 |
| 400 | 172.87.121.143 |
| 401 | 172.87.121.144 |
| 402 | 172.87.121.145 |
| 403 | 172.87.121.146 |
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| 405 | 172.87.121.148 |
| 406 | 172.87.121.149 |
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| 410 | 172.87.121.153 |
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| 416 | 172.87.121.159 |
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| 419 | 172.87.121.162 |
| 420 | 172.87.121.163 |
| 421 | 172.87.121.164 |
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| 450 | 172.87.121.193 |
| 451 | 172.87.121.194 |
| 452 | 172.87.121.195 |
| 453 | 172.87.121.196 |
| 454 | 172.87.121.197 |
| 455 | 172.87.121.198 |
| 456 | 172.87.121.199 |
| 457 | 172.87.121.200 |
| 458 | 172.87.121.201 |
| 459 | 172.87.121.202 |
| 460 | 172.87.121.203 |
| 461 | 172.87.121.204 |
| 462 | 172.87.121.205 |
| 463 | 172.87.121.206 |
| 464 | 172.87.121.207 |
| 465 | 172.87.121.208 |
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| 467 | 172.87.121.210 |
| 468 | 172.87.121.211 |
| 469 | 172.87.121.212 |
| 470 | 172.87.121.213 |
| 471 | 172.87.121.214 |
| 472 | 172.87.121.215 |
| 473 | 172.87.121.216 |
| 474 | 172.87.121.217 |
| 475 | 172.87.121.218 |
| 476 | 172.87.121.219 |
| 477 | 172.87.121.220 |
| 478 | 172.87.121.221 |
| 479 | 172.87.121.222 |
| 480 | 172.87.121.223 |
| 481 | 172.87.121.224 |
| 482 | 172.87.121.225 |
| 483 | 172.87.121.226 |
| 484 | 172.87.121.227 |
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| 488 | 172.87.121.231 |
| 489 | 172.87.121.232 |
| 490 | 172.87.121.233 |
| 491 | 172.87.121.234 |
| 492 | 172.87.121.235 |
| 493 | 172.87.121.236 |
| 494 | 172.87.121.237 |
| 495 | 172.87.121.238 |
| 496 | 172.87.121.239 |
| 497 | 172.87.121.240 |
| 498 | 172.87.121.241 |
| 499 | 172.87.121.242 |
| 500 | 172.87.121.243 |
| 501 | 172.87.121.244 |
| 502 | 172.87.121.245 |
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| 507 | 172.87.121.250 |
| 508 | 172.87.121.251 |
| 509 | 172.87.121.252 |
| 510 | 172.87.121.253 |
| 511 | 172.87.121.254 |
| 512 | 172.87.121.255 |
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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