Technical Reference Datasets

MAC Vendor Lookup, LLM API Pricing, Video Upload Limits and Cipher Suites

The lookup tables developers and network admins reach for: which vendor owns a MAC prefix, what a cipher suite code means, which content type a file extension maps to, what a model costs per million tokens, and how long a video each platform will accept. Search each table, then download it as CSV or JSON.

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MAC Vendor Prefixes

Find the manufacturer behind a MAC address from the IEEE OUI registry.

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All 128 ASCII codes in decimal, hex, octal and binary.

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All 148 CSS named colours with hex and RGB values.

CSS Units Cheat Sheet

Every CSS unit, what it is relative to and when to use it.

Chmod Cheat Sheet

Permission digits, common modes and special bits on one page.

Cron Cheat Sheet

Crontab fields, operators and ready-made schedule expressions.

HTTP Status Codes

Every IANA-registered HTTP status code with its RFC.

IANA Media Types

The full IANA MIME type registry with common file extensions.

LLM API Prices

Per-million-token API prices for 82 models from six vendors.

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MAC Vendor Prefixes

Find the manufacturer behind a MAC address from the IEEE OUI registry.

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CommonMark and GitHub Markdown syntax on one printable page.

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TLS Cipher Suites

Every IANA TLS cipher suite with its code, parts and status.

Video Upload Limits

Max length and file size for video uploads on six social platforms.

Registries

The MAC prefix table comes from the IEEE registration authority's public list of assigned blocks. The cipher suite and media type tables come from the IANA registries, which are the authoritative record of what each code and type name means. Each page links to the registry it was built from and shows when it was read.

Prices and platform limits

Model prices and video upload limits are set by companies rather than standards bodies, and they change without notice. These tables are built from each vendor's own pricing or help page on the date shown, which makes them a useful comparison and a starting point, not a substitute for checking the vendor's page before you commit budget or a production pipeline to a number.