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โง‰ๅ›ฝๅค–ใ‹ใ‚‰ใฎใ‚ตใƒผใƒใƒผใ‚ขใ‚ฏใ‚ปใ‚นใ‚’้ฎๆ–ญใ™ใ‚‹CIDRใƒชใ‚นใƒˆใ‚’่‡ชๅ‰ใงไฝœๆˆใ—ใฆใฟใ‚‹๏ผˆไธฆๅˆ—ๅ‡ฆ็†ใ‚‚ๆœ‰ใ‚Š๏ผ‰

Last updated at Posted at 2026-01-19

โ—‡ใฏใ˜ใ‚ใซ

ไผๆฅญใฏใ‚‚ใกใ‚ใ‚“ใงใ™ใŒๅ€‹ไบบใงVPNใ‚„่‡ชๅฎ…ใ‚ตใƒผใƒใƒผใฎใ‚ปใ‚ญใƒฅใƒชใƒ†ใ‚ฃใƒผใ‚’้ซ˜ใ‚ใ‚‹ใŸใ‚ใซๅ›ฝๅค–ใ‹ใ‚‰ใฎใ‚ขใ‚ฏใ‚ปใ‚นใ‚’ๅˆถ้™ใ‚’่จญใ‘ใ‚‹ไบ‹ใฏ้žๅธธใซๆœ‰็”จใงใ™ใ€‚

็งใฎๅ ดๅˆใ€ๅฎŸ้š›ใซไธๆญฃใ‚ขใ‚ฏใ‚ปใ‚นใฎๅฑฅๆญดใ‚’่ฟฝใ†ใจ็‰นๅฎšใฎๅ›ฝใ‹ใ‚‰ใฎใ‚ขใ‚ฏใ‚ปใ‚นใ ใ‘ใงๆ—ฅๆœฌๅ›ฝๅ†…ใ‹ใ‚‰ใฎไธๆญฃใ‚ขใ‚ฏใ‚ปใ‚นใฏใ‚ใ‚Šใพใ›ใ‚“ใงใ—ใŸใ€‚

ไธๆญฃใ‚ขใ‚ฏใ‚ปใ‚นใ‚’้˜ฒๆญขใ™ใ‚‹ๆ–นๆณ•ใจใ—ใฆใฏ

ใŒๆœ‰ๅŠนไธ”ใคๆœ‰ๅใชๆ–นๆณ•ใงใ™ใ€‚

ใ‚ขใ‚ฏใ‚ปใ‚นๅˆถ้™ใ‚’ใ™ใ‚‹ใŸใ‚ใซใฏipใ‚ขใƒ‰ใƒฌใ‚นใŒใฉใฎๅ›ฝใฎ็‰ฉใชใฎใ‹่จ˜้Œฒใ—ใŸIPใ‚ขใƒ‰ใƒฌใ‚นใƒชใ‚นใƒˆใŒๅฟ…่ฆใซใชใ‚Šใพใ™ใ€‚

ใ—ใ‹ใ—ใ€Œไธ–็•Œใฎๅ›ฝๅˆฅ IPv4 ใ‚ขใƒ‰ใƒฌใ‚นๅ‰ฒใ‚Šๅฝ“ใฆใƒชใ‚นใƒˆใ€ใฏๆณจๆ„ๆ›ธใใซใ‚‚ใ‚ใ‚‹ใจใŠใ‚Šๅ…ฌ้–‹ใ‚’ๅœๆญขใ—ใฆใ—ใพใ†ใ“ใจใŒใ‚ใ‚Šใˆใพใ™ใ€‚

ใใ“ใงใ‚ตใƒผใƒใƒผๅ†…ใงใƒชใ‚นใƒˆใ‚’่‡ชไฝœใ—ใฆใ—ใพใ†ใฎใŒๆœฌใƒ—ใƒญใ‚ฐใƒฉใƒ ใจใชใ‚Šใพใ™ใ€‚

โ—‡PythonใงๅฎŸ่ฃ…

ใƒปRIR to CIDR

โ€ปQiitaใฎๅŸ‹ใ‚่พผใฟ่กจ็คบๅˆถ้™ใซใ‚ˆใ‚Š200่กŒใพใงใ—ใ‹่กจ็คบใ•ใ‚Œใพใ›ใ‚“ใ€‚
ใ€€ๅ…จไฝ“ใฏใƒชใƒณใ‚ฏๅ…ˆใ‚’็›ดๆŽฅ่ฆ‹ใฆใใ ใ•ใ„ใ€‚

RIRใ‹ใ‚‰CIDRใธๅค‰ๆ›ใ™ใ‚‹ใƒ—ใƒญใ‚ฐใƒฉใƒ ใงใ™ใ€‚
IPv4ใ€IPv6ใฎไธกๆ–นใ‚’ๅค‰ๆ›ใ€ใƒชใ‚นใƒˆใ‚’ไฝœๆˆใ—ใพใ™ใ€‚
้ซ˜้€ŸๅŒ–ใ‚’็‹™ใฃใฆไธฆๅˆ—ใƒ€ใ‚ฆใƒณใƒญใƒผใƒˆใชใฉไธฆๅˆ—ๅ‡ฆ็†ใ‚’ใ—ใฆใ„ใพใ™ใ€‚

2026/01/21
ใชใ‚‹ในใใ‚ทใƒณใƒ—ใƒซใซใชใ‚‹ใ‚ˆใ†ๅ…จไฝ“ใ‚’่ฆ‹็›ดใ—ใพใ—ใŸใ€‚
ใ‚ตใ‚คใ‚บใฏ3ๅˆ†2ใปใฉใซใชใ‚Šๅ‡ฆ็†ใ‚‚ๆ—ฉใใชใฃใŸๆฐ—ใŒใ—ใพใ™ใ€‚
loggerใชใฉไฝฟใ‚ใชใใชใฃใŸ้–ขๆ•ฐใ‚‚ใ‚ใ‚‹ใฎใงใ‚ชใƒชใ‚ธใƒŠใƒซใ‚‚ๆฎ‹ใ—ใฆใ‚ใ‚Šใพใ™ใ€‚

ใใ‚Œใžใ‚Œไฝœๆˆใ•ใ‚Œใ‚‹ใƒ•ใ‚กใ‚คใƒซใซใคใ„ใฆ่ชฌๆ˜Žใ„ใŸใ—ใพใ™ใ€‚

ไปŠๅ›žใฎ็›ฎ็š„ใงใ‚ใ‚‹ใ€Œไธ–็•Œใฎๅ›ฝๅˆฅ IPv4 ใ‚ขใƒ‰ใƒฌใ‚นๅ‰ฒใ‚Šๅฝ“ใฆใƒชใ‚นใƒˆใ€ใ‹ใ‚‰ใƒ€ใ‚ฆใƒณใƒญใƒผใƒ‰ใงใใ‚‹cidr.txtใจๅŒ็ญ‰ใฎใƒ•ใ‚กใ‚คใƒซใฏ\ip-lists\ipv4\_CIDR.ipv4ใงใ™ใ€‚

ใƒ—ใƒญใ‚ฐใƒฉใƒ ใƒ•ใ‚กใ‚คใƒซใจๅŒ้šŽๅฑคใซ\ip-lists\ใƒ•ใ‚ฉใƒซใƒ€ใŒไฝœๆˆใ•ใ‚Œใพใ™ใ€‚

็›ดไธ‹ใซใƒ€ใ‚ฆใƒณใƒญใƒผใƒ‰ใ—ใŸ5ใคใฎใƒ•ใ‚กใ‚คใƒซใŒใ‚ใ‚Šใพใ™ใ€‚
ใƒ•ใ‚กใ‚คใƒซๅใฏdelegated-********-extended-latest๏ผˆ"*"ใฏRIRใฎ็ฎก็†ๅ›ฃไฝ“ๅ๏ผ‰

ๆฌกใซCIDRใซๅค‰ๆ›ใ•ใ‚ŒใŸใƒ•ใ‚กใ‚คใƒซใงใ™ใŒใ€ใƒ•ใ‚กใƒซใƒ€ใฏIPv4ใจIPv6ใซๅˆ†ใ‹ใ‚Œใพใ™ใ€‚
ใใ‚Œใžใ‚Œใฎใƒ•ใ‚ฉใƒซใƒ€ไธ‹ใซCIDRใธๅค‰ๆ›ใ•ใ‚ŒใŸใ‚ขใƒซใƒ•ใ‚กใƒ™ใƒƒใƒˆ2ๆกใฎๅ›ฝๅใซๅˆ†ใ‹ใ‚ŒใŸใƒ•ใ‚กใ‚คใƒซใจ็ตฑๅˆใ•ใ‚ŒใŸใƒ•ใ‚กใ‚คใƒซใŒใ‚ใ‚Šใพใ™ใ€‚

็ตฑๅˆใ•ใ‚ŒใŸใƒ•ใ‚กใ‚คใƒซใฏ_CIDR.ipv4ใจ_CIDR.ipv6ใงใ™ใ€‚

ใƒปIPv4 Same Checker

IPv4ใฎใฟใงใ™ใŒ้‡่ค‡ใ‚ขใƒ‰ใƒฌใ‚นใ‚’ใƒใ‚งใƒƒใ‚ฏใ™ใ‚‹ใƒ—ใƒญใ‚ฐใƒฉใƒ ใงใ™ใ€‚
ใƒ—ใƒญใ‚ฐใƒฌใ‚นใƒใƒผใซใ‚ˆใ‚‹้€ฒๆ—่กจ็คบใ‚’ๅฎŸ่ฃ…ใ—ใฆใ„ใพใ™ใ€‚

IPใ‚ขใƒ‰ใƒฌใ‚นใฏ็ฎก็†ใ™ใ‚‹5ใคใฎๅ›ฃไฝ“ๅŒๅฃซใง่ญฒๆธกใ•ใ‚Œใ‚‹ใ“ใจใŒใ‚ใ‚Šใพใ™ใ€‚
ใใฎ้š›ใซๆ—ฅใซใ‚ˆใฃใฆๅŒใ˜IPใ‚ขใƒ‰ใƒฌใ‚นใŒๅŒๆ™‚ใซๅˆฅใฎๅ›ฝใซๅญ˜ๅœจใ™ใ‚‹ใ“ใจใŒใ‚ใ‚Šใพใ™ใ€‚
๏ผˆๆ•ฐๆ—ฅใง่งฃๆถˆใ•ใ‚Œใพใ™๏ผ‰
ใใ‚Œใ‚’ใƒใ‚งใƒƒใ‚ฏใ—ใพใ™ใ€‚
ๆคœๅ‡บ็ตๆžœใฏ_Same_RIR.ipv4ใซไฟๅญ˜ใ•ใ‚Œใพใ™ใ€‚

โ—‡ใŠใ‚ใ‚Šใซ

ๆœ€ๅˆใซใ‚ขใƒƒใƒ—ใ—ใŸ่จ˜ไบ‹ใฏ่›‡่ถณใŒๅคšใ™ใŽใŸใฎใงๅคงๅน…ใซๅŠ ็ญ†ไฟฎๆญฃใ•ใ›ใฆใ„ใŸใ ใใพใ—ใŸใ€‚
ๆœ€ๅพŒใพใงใŠ่ชญใฟใ„ใŸใ ใใ‚ใ‚ŠใŒใจใ†ใ”ใ–ใ„ใพใ—ใŸ๏ผ

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aromatibus

@aromatibus

่ถฃๅ‘ณใงๆฐ—ใซใชใฃใŸใ‚‚ใฎใ‚’ไฝœใฃใฆใ„ใพใ™ใ€‚ C#ใ€Pythonใ€Goใซๆ‰‹ใ‚’ๅ‡บใ—ใฆใ„ใพใ™ใŒ่‡ชๅทฑๆตใฎใŸใ‚ๆ›ธใใ”ใจใซ่จ˜ๆณ•ใŒๅค‰ใ‚ใฃใฆใ„ใŸใ‚Šใ—ใฆ่ชญใฟใซใใ„ใ“ใจใ“ใฎไธŠใ‚ใ‚Šใพใ›ใ‚“ใ€‚ ใปใ‹ใซใฏใ‚นใƒ‘ใ‚คใ‚นใ‹ใ‚‰ใ‚ซใƒฌใƒผใ‚’ไฝœใฃใŸใ‚Š่‡ชๅฎถ็„™็…Žใ—ใŸใ‚ณใƒผใƒ’ใƒผใงไธ€ๆฏไป˜ใใฎใŒๅฅฝใใงใ™ใ€‚

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