1xx informational response
- 100 Continue: Rex Spangler, the Bedazzler
- 101 Switching Protocols: Randall Mouth-Harp
- 102 Processing: Chrysler LeBaron
- 103 Early Hints: The Fishin' Physician
2xx success
- 200 OK: Gravybelly Dunstan
- 201 Created: Extra-Skin Dave
- 202 Accepted: Beanbag-Chair Bill
- 203 Non-Authoritative Information: Grant Sharpnails, the Scratcher
- 204 No Content: Tommy Lice-Comb
- 205 Reset Content: "Medicated Shampoo" Jonah Jump
- 206 Partial Content: General Woundwort, the Giant Rabbit
- 207 Multi-Status: Genius L. Cravat, the Gentleman
- 208 Already Reported: Giant Bat Wings Roland
- 226 IM Used: Texas Emil
3xx redirection
- 300 Multiple Choices: The Ornamentalist
- 301 Moved Permanently: Captain Slick-Talk
- 302 Found: Sackfist, the Tapdancing Trombo
- 303 See Other: Souvenir-Selling Mlodinow
- 304 Not Modified: Blind Buck and "Woozy," the Invisible Seeing-Eye Dog
- 305 Use Proxy: Roundhouse Farter
- 306 Switch Proxy: Red Ball Pnutz
- 307 Temporary Redirect: Fake Cockney Accent Alan Strippe
- 308 Permanent Redirect: Air and Whiskey Dale McGlue
4xx client errors
- 400 Bad Request: Ladry Jerry Lardo
- 401 Unauthorized: Low-Carb Aleks Stovepipe
- 402 Payment Required: Hugo Stares
- 403 Forbidden: Eldred Splinters
- 404 Not Found: Oliver, the Train-Oyster
- 405 Method Not Allowed: Pring, Ultralord of the Hobo Jungle
- 406 Not Acceptable: Utz, the Crab Chip
- 407 Proxy Authentication Required: Salt-and-Pepper Chest
- 408 Request Timeout: Beverly Hills Buntz
- 409 Conflict: Mississippi Barry Phlegm
- 410 Gone: Matter-Eater Brad
- 411 Length Required: 49-State Apthorp, the Alaska-Phobe
- 412 Precondition Failed: New Hampshire Todd
- 413 Payload Too Large: "Taxachusetts" Glenn
- 414 URI Too Long: Hydrocephalic Jones
- 415 Unsupported Media Type: Vermont "Greenmountain Boy" Phil Marijuana
- 416 Range Not Satisfiable: Alaska Mick the Crabber
- 417 Expectation Failed: Arizona Ludwig
- 421 Misdirected Request: Silas Swollentoe
- 422 Unprocessable Entity: Slimneck Holden Fop
- 423 Locked: Aspiring Jaster
- 424 Failed Dependency: Illinois Obama
- 425 Too Early: Sammy Austere
- 426 Upgrade Required: New Mexico Anselm Turquoise-Eater
- 428 Precondition Required: Prayerful Stan, the Bent-Knee Yahoo
- 429 Too Many Requests: Four-Fisted Jock Socko
- 431 Request Header Fields Too Large: Shadow ("Blinky") Preston
- 451 Unavailable For Legal Reasons: Somersaulting Mike Spitz
5xx server errors
- 500 Internal Server Error: The Rambling, Rambling Boris Wander
- 501 Not Implemented: Business-Class Klaus Riel
- 502 Bad Gateway: Emergency Exit Aisle Gustav Nook
- 503 Service Unavailable: Unnervingly Candid Nicky Thain
- 504 Gateway Timeout: Snoops Lightstep Trenchcoat, the Hobo PI
- 505 HTTP Version Not Supported: William Carlos Williams
- 506 Variant Also Negotiates: Beef Grease Porter Dripchin
- 507 Insufficient Storage: Exoskeleton Chester Fields
- 508 Loop Detected: Roth IRA Romeo Leeds, the Well Prepared
- 510 Not Extended: Bum-Hating Virgil Hate-Bum
- 511 Network Authentication Required: Thor the Bum-Hammer
Cross-posted from my website.