A Numerical Recipes institutional subscription provides unlimited on-line access to both Numerical Recipes Electronic (the Numerical Recipes book in electronic format) and Numerical Recipes Code (the machine readable code) for a block of computers within a subscriber's company or organization.

An institutional subscription is generally the most cost-effective way to make Numerical Recipes available to work groups, businesses, and educational institutions. Individuals, and groups of less than about 10, should consider individual subscriptions.

Unlimited use of the code — e.g., for the user to include in his/her own programs — is licensed on computers in the subscribing block of computers.

See complete license terms for the Numerical Recipes Institutional Subscriber License here and more information on Numerical Recipes licenses generally here.

By contiguous fixed IP address range. Work groups or small organizations may purchase institutional subscriptions for any contiguous block of 256 IP addresses (for example, a class C subnet). Larger institutions may purchase subscriptions for multiple blocks of 256, up to a full Class B network of 65536 addresses.

Affordable enterprise-wide subscriptions are encouraged by a highly nonlinear subscription rate structure: The subscription cost for a full Class B network is only 5 times the cost of a single Class C subnet.

Subscribers warrant that they will not use network address translation or other proxy mechanisms to enable a larger number of computers than their subscription level. Subscribers should purchase a block of subscription addresses no smaller than the actual number of enabled computers. If other arrangements are needed as regards NATs or proxies, contact us (see below).

If you are already an institutional subscriber, the portal is here. (You might want to bookmark the portal after you go there the first time.)

Please refer to the following charts:

Special Introductory Prices (effective 1/1/08 - 7/31/08)
Number of IP Addresses Included	Subscription Term
	1 Year	2 Years	3 Years
256 (Class C subnet)	US$  580	US$ 1025	US$ 1450
65536 (Class B network)	US$ 2900	US$ 5125	US$ 7250

Regular Prices (effective 8/1/08 -)
Number of IP Addresses Included	Subscription Term
	1 Year	2 Years	3 Years
256 (Class C subnet)	US$  800	US$ 1400	US$ 2000
65536 (Class B network)	US$ 4000	US$ 7000	US$ 10000

Fax a signed institutional purchase order (or institutional credit card information and signed authorization to charge the transaction on institutional letterhead) to us at (781) 863-1739. Be sure to include (1) your name, telephone and email contact information; (2) the desired number of IP addresses and subscription term in years; and (3) the exact IP address range to be enabled. An example of an IP address range is: "204.193.228.0 to 204.193.228.255 (256 addresses)".

Please send any questions regarding institutional subscriptions to us through our web contact page. Do not send credit card information by email.