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 (198.21.120.0/23) 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 | 198.21.120.0/23 |
ネットワーク(CIDR) | 198.21.120.0/23 |
サブネット表記 | 198.21.120.0/255.255.254.0 |
短縮表記 | 198.21.120 |
IPアドレス範囲 | 198.21.120.0 - 198.21.121.255 |
IPアドレス総数 | 512 |
ネットワークIP | 198.21.120.0 |
ブロードキャストIP | 198.21.121.255 |
ホストアドレス範囲 | 198.21.120.1 - 198.21.121.254 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C |
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 | 198.21.120.0 |
2 | 198.21.120.1 |
3 | 198.21.120.2 |
4 | 198.21.120.3 |
5 | 198.21.120.4 |
6 | 198.21.120.5 |
7 | 198.21.120.6 |
8 | 198.21.120.7 |
9 | 198.21.120.8 |
10 | 198.21.120.9 |
11 | 198.21.120.10 |
12 | 198.21.120.11 |
13 | 198.21.120.12 |
14 | 198.21.120.13 |
15 | 198.21.120.14 |
16 | 198.21.120.15 |
17 | 198.21.120.16 |
18 | 198.21.120.17 |
19 | 198.21.120.18 |
20 | 198.21.120.19 |
21 | 198.21.120.20 |
22 | 198.21.120.21 |
23 | 198.21.120.22 |
24 | 198.21.120.23 |
25 | 198.21.120.24 |
26 | 198.21.120.25 |
27 | 198.21.120.26 |
28 | 198.21.120.27 |
29 | 198.21.120.28 |
30 | 198.21.120.29 |
31 | 198.21.120.30 |
32 | 198.21.120.31 |
33 | 198.21.120.32 |
34 | 198.21.120.33 |
35 | 198.21.120.34 |
36 | 198.21.120.35 |
37 | 198.21.120.36 |
38 | 198.21.120.37 |
39 | 198.21.120.38 |
40 | 198.21.120.39 |
41 | 198.21.120.40 |
42 | 198.21.120.41 |
43 | 198.21.120.42 |
44 | 198.21.120.43 |
45 | 198.21.120.44 |
46 | 198.21.120.45 |
47 | 198.21.120.46 |
48 | 198.21.120.47 |
49 | 198.21.120.48 |
50 | 198.21.120.49 |
51 | 198.21.120.50 |
52 | 198.21.120.51 |
53 | 198.21.120.52 |
54 | 198.21.120.53 |
55 | 198.21.120.54 |
56 | 198.21.120.55 |
57 | 198.21.120.56 |
58 | 198.21.120.57 |
59 | 198.21.120.58 |
60 | 198.21.120.59 |
61 | 198.21.120.60 |
62 | 198.21.120.61 |
63 | 198.21.120.62 |
64 | 198.21.120.63 |
65 | 198.21.120.64 |
66 | 198.21.120.65 |
67 | 198.21.120.66 |
68 | 198.21.120.67 |
69 | 198.21.120.68 |
70 | 198.21.120.69 |
71 | 198.21.120.70 |
72 | 198.21.120.71 |
73 | 198.21.120.72 |
74 | 198.21.120.73 |
75 | 198.21.120.74 |
76 | 198.21.120.75 |
77 | 198.21.120.76 |
78 | 198.21.120.77 |
79 | 198.21.120.78 |
80 | 198.21.120.79 |
81 | 198.21.120.80 |
82 | 198.21.120.81 |
83 | 198.21.120.82 |
84 | 198.21.120.83 |
85 | 198.21.120.84 |
86 | 198.21.120.85 |
87 | 198.21.120.86 |
88 | 198.21.120.87 |
89 | 198.21.120.88 |
90 | 198.21.120.89 |
91 | 198.21.120.90 |
92 | 198.21.120.91 |
93 | 198.21.120.92 |
94 | 198.21.120.93 |
95 | 198.21.120.94 |
96 | 198.21.120.95 |
97 | 198.21.120.96 |
98 | 198.21.120.97 |
99 | 198.21.120.98 |
100 | 198.21.120.99 |
101 | 198.21.120.100 |
102 | 198.21.120.101 |
103 | 198.21.120.102 |
104 | 198.21.120.103 |
105 | 198.21.120.104 |
106 | 198.21.120.105 |
107 | 198.21.120.106 |
108 | 198.21.120.107 |
109 | 198.21.120.108 |
110 | 198.21.120.109 |
111 | 198.21.120.110 |
112 | 198.21.120.111 |
113 | 198.21.120.112 |
114 | 198.21.120.113 |
115 | 198.21.120.114 |
116 | 198.21.120.115 |
117 | 198.21.120.116 |
118 | 198.21.120.117 |
119 | 198.21.120.118 |
120 | 198.21.120.119 |
121 | 198.21.120.120 |
122 | 198.21.120.121 |
123 | 198.21.120.122 |
124 | 198.21.120.123 |
125 | 198.21.120.124 |
126 | 198.21.120.125 |
127 | 198.21.120.126 |
128 | 198.21.120.127 |
129 | 198.21.120.128 |
130 | 198.21.120.129 |
131 | 198.21.120.130 |
132 | 198.21.120.131 |
133 | 198.21.120.132 |
134 | 198.21.120.133 |
135 | 198.21.120.134 |
136 | 198.21.120.135 |
137 | 198.21.120.136 |
138 | 198.21.120.137 |
139 | 198.21.120.138 |
140 | 198.21.120.139 |
141 | 198.21.120.140 |
142 | 198.21.120.141 |
143 | 198.21.120.142 |
144 | 198.21.120.143 |
145 | 198.21.120.144 |
146 | 198.21.120.145 |
147 | 198.21.120.146 |
148 | 198.21.120.147 |
149 | 198.21.120.148 |
150 | 198.21.120.149 |
151 | 198.21.120.150 |
152 | 198.21.120.151 |
153 | 198.21.120.152 |
154 | 198.21.120.153 |
155 | 198.21.120.154 |
156 | 198.21.120.155 |
157 | 198.21.120.156 |
158 | 198.21.120.157 |
159 | 198.21.120.158 |
160 | 198.21.120.159 |
161 | 198.21.120.160 |
162 | 198.21.120.161 |
163 | 198.21.120.162 |
164 | 198.21.120.163 |
165 | 198.21.120.164 |
166 | 198.21.120.165 |
167 | 198.21.120.166 |
168 | 198.21.120.167 |
169 | 198.21.120.168 |
170 | 198.21.120.169 |
171 | 198.21.120.170 |
172 | 198.21.120.171 |
173 | 198.21.120.172 |
174 | 198.21.120.173 |
175 | 198.21.120.174 |
176 | 198.21.120.175 |
177 | 198.21.120.176 |
178 | 198.21.120.177 |
179 | 198.21.120.178 |
180 | 198.21.120.179 |
181 | 198.21.120.180 |
182 | 198.21.120.181 |
183 | 198.21.120.182 |
184 | 198.21.120.183 |
185 | 198.21.120.184 |
186 | 198.21.120.185 |
187 | 198.21.120.186 |
188 | 198.21.120.187 |
189 | 198.21.120.188 |
190 | 198.21.120.189 |
191 | 198.21.120.190 |
192 | 198.21.120.191 |
193 | 198.21.120.192 |
194 | 198.21.120.193 |
195 | 198.21.120.194 |
196 | 198.21.120.195 |
197 | 198.21.120.196 |
198 | 198.21.120.197 |
199 | 198.21.120.198 |
200 | 198.21.120.199 |
201 | 198.21.120.200 |
202 | 198.21.120.201 |
203 | 198.21.120.202 |
204 | 198.21.120.203 |
205 | 198.21.120.204 |
206 | 198.21.120.205 |
207 | 198.21.120.206 |
208 | 198.21.120.207 |
209 | 198.21.120.208 |
210 | 198.21.120.209 |
211 | 198.21.120.210 |
212 | 198.21.120.211 |
213 | 198.21.120.212 |
214 | 198.21.120.213 |
215 | 198.21.120.214 |
216 | 198.21.120.215 |
217 | 198.21.120.216 |
218 | 198.21.120.217 |
219 | 198.21.120.218 |
220 | 198.21.120.219 |
221 | 198.21.120.220 |
222 | 198.21.120.221 |
223 | 198.21.120.222 |
224 | 198.21.120.223 |
225 | 198.21.120.224 |
226 | 198.21.120.225 |
227 | 198.21.120.226 |
228 | 198.21.120.227 |
229 | 198.21.120.228 |
230 | 198.21.120.229 |
231 | 198.21.120.230 |
232 | 198.21.120.231 |
233 | 198.21.120.232 |
234 | 198.21.120.233 |
235 | 198.21.120.234 |
236 | 198.21.120.235 |
237 | 198.21.120.236 |
238 | 198.21.120.237 |
239 | 198.21.120.238 |
240 | 198.21.120.239 |
241 | 198.21.120.240 |
242 | 198.21.120.241 |
243 | 198.21.120.242 |
244 | 198.21.120.243 |
245 | 198.21.120.244 |
246 | 198.21.120.245 |
247 | 198.21.120.246 |
248 | 198.21.120.247 |
249 | 198.21.120.248 |
250 | 198.21.120.249 |
251 | 198.21.120.250 |
252 | 198.21.120.251 |
253 | 198.21.120.252 |
254 | 198.21.120.253 |
255 | 198.21.120.254 |
256 | 198.21.120.255 |
257 | 198.21.121.0 |
258 | 198.21.121.1 |
259 | 198.21.121.2 |
260 | 198.21.121.3 |
261 | 198.21.121.4 |
262 | 198.21.121.5 |
263 | 198.21.121.6 |
264 | 198.21.121.7 |
265 | 198.21.121.8 |
266 | 198.21.121.9 |
267 | 198.21.121.10 |
268 | 198.21.121.11 |
269 | 198.21.121.12 |
270 | 198.21.121.13 |
271 | 198.21.121.14 |
272 | 198.21.121.15 |
273 | 198.21.121.16 |
274 | 198.21.121.17 |
275 | 198.21.121.18 |
276 | 198.21.121.19 |
277 | 198.21.121.20 |
278 | 198.21.121.21 |
279 | 198.21.121.22 |
280 | 198.21.121.23 |
281 | 198.21.121.24 |
282 | 198.21.121.25 |
283 | 198.21.121.26 |
284 | 198.21.121.27 |
285 | 198.21.121.28 |
286 | 198.21.121.29 |
287 | 198.21.121.30 |
288 | 198.21.121.31 |
289 | 198.21.121.32 |
290 | 198.21.121.33 |
291 | 198.21.121.34 |
292 | 198.21.121.35 |
293 | 198.21.121.36 |
294 | 198.21.121.37 |
295 | 198.21.121.38 |
296 | 198.21.121.39 |
297 | 198.21.121.40 |
298 | 198.21.121.41 |
299 | 198.21.121.42 |
300 | 198.21.121.43 |
301 | 198.21.121.44 |
302 | 198.21.121.45 |
303 | 198.21.121.46 |
304 | 198.21.121.47 |
305 | 198.21.121.48 |
306 | 198.21.121.49 |
307 | 198.21.121.50 |
308 | 198.21.121.51 |
309 | 198.21.121.52 |
310 | 198.21.121.53 |
311 | 198.21.121.54 |
312 | 198.21.121.55 |
313 | 198.21.121.56 |
314 | 198.21.121.57 |
315 | 198.21.121.58 |
316 | 198.21.121.59 |
317 | 198.21.121.60 |
318 | 198.21.121.61 |
319 | 198.21.121.62 |
320 | 198.21.121.63 |
321 | 198.21.121.64 |
322 | 198.21.121.65 |
323 | 198.21.121.66 |
324 | 198.21.121.67 |
325 | 198.21.121.68 |
326 | 198.21.121.69 |
327 | 198.21.121.70 |
328 | 198.21.121.71 |
329 | 198.21.121.72 |
330 | 198.21.121.73 |
331 | 198.21.121.74 |
332 | 198.21.121.75 |
333 | 198.21.121.76 |
334 | 198.21.121.77 |
335 | 198.21.121.78 |
336 | 198.21.121.79 |
337 | 198.21.121.80 |
338 | 198.21.121.81 |
339 | 198.21.121.82 |
340 | 198.21.121.83 |
341 | 198.21.121.84 |
342 | 198.21.121.85 |
343 | 198.21.121.86 |
344 | 198.21.121.87 |
345 | 198.21.121.88 |
346 | 198.21.121.89 |
347 | 198.21.121.90 |
348 | 198.21.121.91 |
349 | 198.21.121.92 |
350 | 198.21.121.93 |
351 | 198.21.121.94 |
352 | 198.21.121.95 |
353 | 198.21.121.96 |
354 | 198.21.121.97 |
355 | 198.21.121.98 |
356 | 198.21.121.99 |
357 | 198.21.121.100 |
358 | 198.21.121.101 |
359 | 198.21.121.102 |
360 | 198.21.121.103 |
361 | 198.21.121.104 |
362 | 198.21.121.105 |
363 | 198.21.121.106 |
364 | 198.21.121.107 |
365 | 198.21.121.108 |
366 | 198.21.121.109 |
367 | 198.21.121.110 |
368 | 198.21.121.111 |
369 | 198.21.121.112 |
370 | 198.21.121.113 |
371 | 198.21.121.114 |
372 | 198.21.121.115 |
373 | 198.21.121.116 |
374 | 198.21.121.117 |
375 | 198.21.121.118 |
376 | 198.21.121.119 |
377 | 198.21.121.120 |
378 | 198.21.121.121 |
379 | 198.21.121.122 |
380 | 198.21.121.123 |
381 | 198.21.121.124 |
382 | 198.21.121.125 |
383 | 198.21.121.126 |
384 | 198.21.121.127 |
385 | 198.21.121.128 |
386 | 198.21.121.129 |
387 | 198.21.121.130 |
388 | 198.21.121.131 |
389 | 198.21.121.132 |
390 | 198.21.121.133 |
391 | 198.21.121.134 |
392 | 198.21.121.135 |
393 | 198.21.121.136 |
394 | 198.21.121.137 |
395 | 198.21.121.138 |
396 | 198.21.121.139 |
397 | 198.21.121.140 |
398 | 198.21.121.141 |
399 | 198.21.121.142 |
400 | 198.21.121.143 |
401 | 198.21.121.144 |
402 | 198.21.121.145 |
403 | 198.21.121.146 |
404 | 198.21.121.147 |
405 | 198.21.121.148 |
406 | 198.21.121.149 |
407 | 198.21.121.150 |
408 | 198.21.121.151 |
409 | 198.21.121.152 |
410 | 198.21.121.153 |
411 | 198.21.121.154 |
412 | 198.21.121.155 |
413 | 198.21.121.156 |
414 | 198.21.121.157 |
415 | 198.21.121.158 |
416 | 198.21.121.159 |
417 | 198.21.121.160 |
418 | 198.21.121.161 |
419 | 198.21.121.162 |
420 | 198.21.121.163 |
421 | 198.21.121.164 |
422 | 198.21.121.165 |
423 | 198.21.121.166 |
424 | 198.21.121.167 |
425 | 198.21.121.168 |
426 | 198.21.121.169 |
427 | 198.21.121.170 |
428 | 198.21.121.171 |
429 | 198.21.121.172 |
430 | 198.21.121.173 |
431 | 198.21.121.174 |
432 | 198.21.121.175 |
433 | 198.21.121.176 |
434 | 198.21.121.177 |
435 | 198.21.121.178 |
436 | 198.21.121.179 |
437 | 198.21.121.180 |
438 | 198.21.121.181 |
439 | 198.21.121.182 |
440 | 198.21.121.183 |
441 | 198.21.121.184 |
442 | 198.21.121.185 |
443 | 198.21.121.186 |
444 | 198.21.121.187 |
445 | 198.21.121.188 |
446 | 198.21.121.189 |
447 | 198.21.121.190 |
448 | 198.21.121.191 |
449 | 198.21.121.192 |
450 | 198.21.121.193 |
451 | 198.21.121.194 |
452 | 198.21.121.195 |
453 | 198.21.121.196 |
454 | 198.21.121.197 |
455 | 198.21.121.198 |
456 | 198.21.121.199 |
457 | 198.21.121.200 |
458 | 198.21.121.201 |
459 | 198.21.121.202 |
460 | 198.21.121.203 |
461 | 198.21.121.204 |
462 | 198.21.121.205 |
463 | 198.21.121.206 |
464 | 198.21.121.207 |
465 | 198.21.121.208 |
466 | 198.21.121.209 |
467 | 198.21.121.210 |
468 | 198.21.121.211 |
469 | 198.21.121.212 |
470 | 198.21.121.213 |
471 | 198.21.121.214 |
472 | 198.21.121.215 |
473 | 198.21.121.216 |
474 | 198.21.121.217 |
475 | 198.21.121.218 |
476 | 198.21.121.219 |
477 | 198.21.121.220 |
478 | 198.21.121.221 |
479 | 198.21.121.222 |
480 | 198.21.121.223 |
481 | 198.21.121.224 |
482 | 198.21.121.225 |
483 | 198.21.121.226 |
484 | 198.21.121.227 |
485 | 198.21.121.228 |
486 | 198.21.121.229 |
487 | 198.21.121.230 |
488 | 198.21.121.231 |
489 | 198.21.121.232 |
490 | 198.21.121.233 |
491 | 198.21.121.234 |
492 | 198.21.121.235 |
493 | 198.21.121.236 |
494 | 198.21.121.237 |
495 | 198.21.121.238 |
496 | 198.21.121.239 |
497 | 198.21.121.240 |
498 | 198.21.121.241 |
499 | 198.21.121.242 |
500 | 198.21.121.243 |
501 | 198.21.121.244 |
502 | 198.21.121.245 |
503 | 198.21.121.246 |
504 | 198.21.121.247 |
505 | 198.21.121.248 |
506 | 198.21.121.249 |
507 | 198.21.121.250 |
508 | 198.21.121.251 |
509 | 198.21.121.252 |
510 | 198.21.121.253 |
511 | 198.21.121.254 |
512 | 198.21.121.255 |
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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公開日:
最終更新日:2019/07/06