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 (51.197.172.0/23) 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 | 51.197.172.0/23 |
| ネットワーク(CIDR) | 51.197.172.0/23 |
| サブネット表記 | 51.197.172.0/255.255.254.0 |
| 短縮表記 | 51.197.172 |
| IPアドレス範囲 | 51.197.172.0 - 51.197.173.255 |
| IPアドレス総数 | 512 |
| ネットワークIP | 51.197.172.0 |
| ブロードキャストIP | 51.197.173.255 |
| ホストアドレス範囲 | 51.197.172.1 - 51.197.173.254 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 | 51.197.172.0 |
| 2 | 51.197.172.1 |
| 3 | 51.197.172.2 |
| 4 | 51.197.172.3 |
| 5 | 51.197.172.4 |
| 6 | 51.197.172.5 |
| 7 | 51.197.172.6 |
| 8 | 51.197.172.7 |
| 9 | 51.197.172.8 |
| 10 | 51.197.172.9 |
| 11 | 51.197.172.10 |
| 12 | 51.197.172.11 |
| 13 | 51.197.172.12 |
| 14 | 51.197.172.13 |
| 15 | 51.197.172.14 |
| 16 | 51.197.172.15 |
| 17 | 51.197.172.16 |
| 18 | 51.197.172.17 |
| 19 | 51.197.172.18 |
| 20 | 51.197.172.19 |
| 21 | 51.197.172.20 |
| 22 | 51.197.172.21 |
| 23 | 51.197.172.22 |
| 24 | 51.197.172.23 |
| 25 | 51.197.172.24 |
| 26 | 51.197.172.25 |
| 27 | 51.197.172.26 |
| 28 | 51.197.172.27 |
| 29 | 51.197.172.28 |
| 30 | 51.197.172.29 |
| 31 | 51.197.172.30 |
| 32 | 51.197.172.31 |
| 33 | 51.197.172.32 |
| 34 | 51.197.172.33 |
| 35 | 51.197.172.34 |
| 36 | 51.197.172.35 |
| 37 | 51.197.172.36 |
| 38 | 51.197.172.37 |
| 39 | 51.197.172.38 |
| 40 | 51.197.172.39 |
| 41 | 51.197.172.40 |
| 42 | 51.197.172.41 |
| 43 | 51.197.172.42 |
| 44 | 51.197.172.43 |
| 45 | 51.197.172.44 |
| 46 | 51.197.172.45 |
| 47 | 51.197.172.46 |
| 48 | 51.197.172.47 |
| 49 | 51.197.172.48 |
| 50 | 51.197.172.49 |
| 51 | 51.197.172.50 |
| 52 | 51.197.172.51 |
| 53 | 51.197.172.52 |
| 54 | 51.197.172.53 |
| 55 | 51.197.172.54 |
| 56 | 51.197.172.55 |
| 57 | 51.197.172.56 |
| 58 | 51.197.172.57 |
| 59 | 51.197.172.58 |
| 60 | 51.197.172.59 |
| 61 | 51.197.172.60 |
| 62 | 51.197.172.61 |
| 63 | 51.197.172.62 |
| 64 | 51.197.172.63 |
| 65 | 51.197.172.64 |
| 66 | 51.197.172.65 |
| 67 | 51.197.172.66 |
| 68 | 51.197.172.67 |
| 69 | 51.197.172.68 |
| 70 | 51.197.172.69 |
| 71 | 51.197.172.70 |
| 72 | 51.197.172.71 |
| 73 | 51.197.172.72 |
| 74 | 51.197.172.73 |
| 75 | 51.197.172.74 |
| 76 | 51.197.172.75 |
| 77 | 51.197.172.76 |
| 78 | 51.197.172.77 |
| 79 | 51.197.172.78 |
| 80 | 51.197.172.79 |
| 81 | 51.197.172.80 |
| 82 | 51.197.172.81 |
| 83 | 51.197.172.82 |
| 84 | 51.197.172.83 |
| 85 | 51.197.172.84 |
| 86 | 51.197.172.85 |
| 87 | 51.197.172.86 |
| 88 | 51.197.172.87 |
| 89 | 51.197.172.88 |
| 90 | 51.197.172.89 |
| 91 | 51.197.172.90 |
| 92 | 51.197.172.91 |
| 93 | 51.197.172.92 |
| 94 | 51.197.172.93 |
| 95 | 51.197.172.94 |
| 96 | 51.197.172.95 |
| 97 | 51.197.172.96 |
| 98 | 51.197.172.97 |
| 99 | 51.197.172.98 |
| 100 | 51.197.172.99 |
| 101 | 51.197.172.100 |
| 102 | 51.197.172.101 |
| 103 | 51.197.172.102 |
| 104 | 51.197.172.103 |
| 105 | 51.197.172.104 |
| 106 | 51.197.172.105 |
| 107 | 51.197.172.106 |
| 108 | 51.197.172.107 |
| 109 | 51.197.172.108 |
| 110 | 51.197.172.109 |
| 111 | 51.197.172.110 |
| 112 | 51.197.172.111 |
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| 146 | 51.197.172.145 |
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| 148 | 51.197.172.147 |
| 149 | 51.197.172.148 |
| 150 | 51.197.172.149 |
| 151 | 51.197.172.150 |
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| 154 | 51.197.172.153 |
| 155 | 51.197.172.154 |
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| 160 | 51.197.172.159 |
| 161 | 51.197.172.160 |
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| 163 | 51.197.172.162 |
| 164 | 51.197.172.163 |
| 165 | 51.197.172.164 |
| 166 | 51.197.172.165 |
| 167 | 51.197.172.166 |
| 168 | 51.197.172.167 |
| 169 | 51.197.172.168 |
| 170 | 51.197.172.169 |
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| 179 | 51.197.172.178 |
| 180 | 51.197.172.179 |
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| 182 | 51.197.172.181 |
| 183 | 51.197.172.182 |
| 184 | 51.197.172.183 |
| 185 | 51.197.172.184 |
| 186 | 51.197.172.185 |
| 187 | 51.197.172.186 |
| 188 | 51.197.172.187 |
| 189 | 51.197.172.188 |
| 190 | 51.197.172.189 |
| 191 | 51.197.172.190 |
| 192 | 51.197.172.191 |
| 193 | 51.197.172.192 |
| 194 | 51.197.172.193 |
| 195 | 51.197.172.194 |
| 196 | 51.197.172.195 |
| 197 | 51.197.172.196 |
| 198 | 51.197.172.197 |
| 199 | 51.197.172.198 |
| 200 | 51.197.172.199 |
| 201 | 51.197.172.200 |
| 202 | 51.197.172.201 |
| 203 | 51.197.172.202 |
| 204 | 51.197.172.203 |
| 205 | 51.197.172.204 |
| 206 | 51.197.172.205 |
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| 209 | 51.197.172.208 |
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| 232 | 51.197.172.231 |
| 233 | 51.197.172.232 |
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| 245 | 51.197.172.244 |
| 246 | 51.197.172.245 |
| 247 | 51.197.172.246 |
| 248 | 51.197.172.247 |
| 249 | 51.197.172.248 |
| 250 | 51.197.172.249 |
| 251 | 51.197.172.250 |
| 252 | 51.197.172.251 |
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| 254 | 51.197.172.253 |
| 255 | 51.197.172.254 |
| 256 | 51.197.172.255 |
| 257 | 51.197.173.0 |
| 258 | 51.197.173.1 |
| 259 | 51.197.173.2 |
| 260 | 51.197.173.3 |
| 261 | 51.197.173.4 |
| 262 | 51.197.173.5 |
| 263 | 51.197.173.6 |
| 264 | 51.197.173.7 |
| 265 | 51.197.173.8 |
| 266 | 51.197.173.9 |
| 267 | 51.197.173.10 |
| 268 | 51.197.173.11 |
| 269 | 51.197.173.12 |
| 270 | 51.197.173.13 |
| 271 | 51.197.173.14 |
| 272 | 51.197.173.15 |
| 273 | 51.197.173.16 |
| 274 | 51.197.173.17 |
| 275 | 51.197.173.18 |
| 276 | 51.197.173.19 |
| 277 | 51.197.173.20 |
| 278 | 51.197.173.21 |
| 279 | 51.197.173.22 |
| 280 | 51.197.173.23 |
| 281 | 51.197.173.24 |
| 282 | 51.197.173.25 |
| 283 | 51.197.173.26 |
| 284 | 51.197.173.27 |
| 285 | 51.197.173.28 |
| 286 | 51.197.173.29 |
| 287 | 51.197.173.30 |
| 288 | 51.197.173.31 |
| 289 | 51.197.173.32 |
| 290 | 51.197.173.33 |
| 291 | 51.197.173.34 |
| 292 | 51.197.173.35 |
| 293 | 51.197.173.36 |
| 294 | 51.197.173.37 |
| 295 | 51.197.173.38 |
| 296 | 51.197.173.39 |
| 297 | 51.197.173.40 |
| 298 | 51.197.173.41 |
| 299 | 51.197.173.42 |
| 300 | 51.197.173.43 |
| 301 | 51.197.173.44 |
| 302 | 51.197.173.45 |
| 303 | 51.197.173.46 |
| 304 | 51.197.173.47 |
| 305 | 51.197.173.48 |
| 306 | 51.197.173.49 |
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| 308 | 51.197.173.51 |
| 309 | 51.197.173.52 |
| 310 | 51.197.173.53 |
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| 312 | 51.197.173.55 |
| 313 | 51.197.173.56 |
| 314 | 51.197.173.57 |
| 315 | 51.197.173.58 |
| 316 | 51.197.173.59 |
| 317 | 51.197.173.60 |
| 318 | 51.197.173.61 |
| 319 | 51.197.173.62 |
| 320 | 51.197.173.63 |
| 321 | 51.197.173.64 |
| 322 | 51.197.173.65 |
| 323 | 51.197.173.66 |
| 324 | 51.197.173.67 |
| 325 | 51.197.173.68 |
| 326 | 51.197.173.69 |
| 327 | 51.197.173.70 |
| 328 | 51.197.173.71 |
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| 400 | 51.197.173.143 |
| 401 | 51.197.173.144 |
| 402 | 51.197.173.145 |
| 403 | 51.197.173.146 |
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| 405 | 51.197.173.148 |
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| 453 | 51.197.173.196 |
| 454 | 51.197.173.197 |
| 455 | 51.197.173.198 |
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| 459 | 51.197.173.202 |
| 460 | 51.197.173.203 |
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| 510 | 51.197.173.253 |
| 511 | 51.197.173.254 |
| 512 | 51.197.173.255 |
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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