Area Code Lookup
Know the U.S. city? Find the area code. Works in reverse, too. From Melissa Data.

ASCII character table
For those times when you need to know that ASCII 13 is a carriage return.

EDGAR Online IPO Glossary
EDGAR Online explains all the nuances and distinctions of those tricky IPO terms.

FFIEC Geocoding System
Converts a street address in the US to a (1990 or 2000) census tract number.

Hospital Admission Codes
Called ICD-9 codes, these International Classification of Diseases codes are used on medical and insurance records, and health care databases. Choose a year and the "readme" file.

HTML color chart
The colors of the hypertext rainbow.

NAICS (Newer than SICs)
SICs are being replaced by the North American Industry Classification System (NAICS), which consolidates the U.S., Mexican and Canadian systems under NAFTA.

National ZIP Code Address Server
Don't know the ZIP code? Just enter the address and this site will produce it.

Search for SICs
Labor Department info on Standard Industry Classifications.

SIC codes described
U.S. Census info on Standard Industrial Classifications. Used in many databases to put businesses in categories.

SIC codes list
Download and import.

U.S. Postal Service Abbreviations
State abbreviations, street suffixes, and other address words abbreviated.

WebElements The Periodic Table on the Web
The first Periodic Table on the Web.

ZIP Code Address Server
Give it a U.S. street address (even one that sounds like the real address), and it gives you a full address with ZIP+4 code. Can give you ZIP+4 for a specific firm.

ZIP Code/City/State Associations
Tells you which cities are in a ZIP Code, and vice versa.

ZIP Codes database for sale
Where do you get a database of U.S. Postal Service ZIP Codes and cities?

ZIP+4 Code Look-Up
Enter a U.S. address to find the standardized ZIP code.