[
    {
        "site": "www",
        "regex": "^alice$",
        "description": "Users named Alice cannot join (example)",
        "case_sensitive": true,
        "user": true
    },
    {
        "site": "www",
        "regex": "^bob$",
        "description": "Users named Bob cannot join (example)",
        "case_sensitive": true,
        "user": true
    },
    {
        "site": null,
        "regex": "^.*@example\\.com$",
        "description": "Cannot join using example.com emails (example)",
        "case_sensitive": false,
        "email": true
    },
    {
        "site": null,
        "regex": "wikidot",
        "description": "Reserved name (wikidot)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "wikijump",
        "description": "Reserved name (wikijump)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^mail$",
        "description": "Reserved name (mail)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^dev(eloper)?$",
        "description": "Reserved name (dev / developer)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^blog$",
        "description": "Reserved name (blog)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^login$",
        "description": "Reserved name (login)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^logout$",
        "description": "Reserved name (logout)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^support$",
        "description": "Reserved name (support)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^help(desk)?$",
        "description": "Reserved name (help / helpdesk)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^pro(fessional)?$",
        "description": "Reserved name (pro / professional)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^web$",
        "description": "Reserved name (web)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^cdn$",
        "description": "Reserved name (cdn)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^(ssl|tls)$",
        "description": "Reserved name (ssl / tls)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^pay(ments?)?$",
        "description": "Reserved name (pay / payment / payments)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^(wd|wj)?(up|down)load$",
        "description": "Reserved name (upload / download)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^secure$",
        "description": "Reserved name (secure)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^serv(ices?)?$",
        "description": "Reserved name (serv / service / services)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^static[0-9]*$",
        "description": "Reserved name (static with optional numbers)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^api$",
        "description": "Reserved name (api)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^guru$",
        "description": "Reserved name (guru)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^admin(ministrator)?",
        "description": "Reserved name (starts with admin / administrator)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^mod$",
        "description": "Reserved name (mod)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^moderator",
        "description": "Reserved name (starts with moderator)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^staff$",
        "description": "Reserved name (staff)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^module$",
        "description": "Reserved name (module)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^sys$",
        "description": "Reserved name (sys)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^system",
        "description": "Reserved name (starts with system)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^root$",
        "description": "Reserved name (root)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^sudo$",
        "description": "Reserved name (sudo)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^wheel$",
        "description": "Reserved name (wheel)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^anon(ymous)?$",
        "description": "Reserved name (anon / anonymous)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^guest",
        "description": "Reserved name (starts with guest)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^template$",
        "description": "Reserved name (template)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^template-$",
        "description": "Reserved name (starts with template-)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^example",
        "description": "Reserved name (starts with example)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^unknown$",
        "description": "Reserved name (unknown)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^null$",
        "description": "Reserved name (null)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^undefined$",
        "description": "Reserved name (undefined)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^(img|image)$",
        "description": "Reserved name (img / image)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^scripts?$",
        "description": "Reserved name (script / scripts)",
        "case_sensitive": false,
        "user": true
    },

    {
        "site": null,
        "regex": "^warning$",
        "description": "Reserved name (warning)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^error$",
        "description": "Reserved name (error)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^(ro)?bots?$",
        "description": "Reserved name (bot / bots / robot / robots)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^(ftp|http|https)$",
        "description": "Reserved name (ftp / http / https)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^(stage|staging)$",
        "description": "Reserved name (stage / staging)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^prod(uction)?$",
        "description": "Reserved name (prod / production)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^official$",
        "description": "Reserved name (official)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^porn",
        "description": "Starts with 'porn'",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^spam",
        "description": "Starts with 'spam'",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^.$",
        "description": "Single-character usernames and slugs",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^[0-9]*www[0-9]*$",
        "description": "Looks like 'WWW'",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^xn-{1,}",
        "description": "Looks like/is punycode",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "@",
        "description": "Looks like an email (contains @)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^[0-9]+(\\.[0-9]+){2,}$",
        "description": "Looks like IPv4",
        "case_sensitive": false,
        "user": true,
        "file": true
    },
    {
        "site": null,
        "regex": "^:*[0-9a-f]+(:[0-9a-f]*)*$",
        "description": "Looks like IPv6",
        "case_sensitive": false,
        "user": true,
        "file": true
    },
    {
        "site": null,
        "regex": "^[o0]5\\-\\w+$",
        "description": "Looks like an O5 designation (SCP Wiki related)",
        "case_sensitive": false,
        "user": true
    },
    {
        "site": null,
        "regex": "^SCP\\-\\w+$",
        "description": "Looks like an SCP designation (SCP Wiki related)",
        "case_sensitive": false,
        "user": true
    }
]