Characters allowed within a hostname but don't change the hostname



Checks what characters can be added in the middle of "https://example.com", while keeping the hostname "example.com"
Created by: ThomasOrlita
Created on: Tuesday, April 30, 2024 at 6:48:51 AM
Updated on: Monday, March 31, 2025 at 2:38:28 AM
Vector type: JS
Vector charset: UTF-8
Template used:
if (new URL("https://example.co" + String.fromCodePoint($[i]) + "m").hostname === 'example.com'){log($[i])}
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Sample payloads
if (new URL("https://example.co" + String.fromCodePoint(9) + "m").hostname === 'example.com'){alert(9)}
if (new URL("https://example.co" + String.fromCodePoint(10) + "m").hostname === 'example.com'){alert(10)}
if (new URL("https://example.co" + String.fromCodePoint(13) + "m").hostname === 'example.com'){alert(13)}
if (new URL("https://example.co" + String.fromCodePoint(173) + "m").hostname === 'example.com'){alert(173)}
if (new URL("https://example.co" + String.fromCodePoint(847) + "m").hostname === 'example.com'){alert(847)}
if (new URL("https://example.co" + String.fromCodePoint(6155) + "m").hostname === 'example.com'){alert(6155)}
if (new URL("https://example.co" + String.fromCodePoint(6156) + "m").hostname === 'example.com'){alert(6156)}
if (new URL("https://example.co" + String.fromCodePoint(6157) + "m").hostname === 'example.com'){alert(6157)}
if (new URL("https://example.co" + String.fromCodePoint(6159) + "m").hostname === 'example.com'){alert(6159)}
if (new URL("https://example.co" + String.fromCodePoint(8203) + "m").hostname === 'example.com'){alert(8203)}
if (new URL("https://example.co" + String.fromCodePoint(8288) + "m").hostname === 'example.com'){alert(8288)}
if (new URL("https://example.co" + String.fromCodePoint(8292) + "m").hostname === 'example.com'){alert(8292)}
if (new URL("https://example.co" + String.fromCodePoint(65024) + "m").hostname === 'example.com'){alert(65024)}
if (new URL("https://example.co" + String.fromCodePoint(65025) + "m").hostname === 'example.com'){alert(65025)}
if (new URL("https://example.co" + String.fromCodePoint(65026) + "m").hostname === 'example.com'){alert(65026)}
if (new URL("https://example.co" + String.fromCodePoint(65027) + "m").hostname === 'example.com'){alert(65027)}
if (new URL("https://example.co" + String.fromCodePoint(65028) + "m").hostname === 'example.com'){alert(65028)}
if (new URL("https://example.co" + String.fromCodePoint(65029) + "m").hostname === 'example.com'){alert(65029)}
if (new URL("https://example.co" + String.fromCodePoint(65030) + "m").hostname === 'example.com'){alert(65030)}
if (new URL("https://example.co" + String.fromCodePoint(65031) + "m").hostname === 'example.com'){alert(65031)}
Fuzz results

Chrome 124.0.0.0 Unknown Unknown
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Wed May 01 2024
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Safari 17.6 mobile iOS 17.6.1
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