The University of Illinois, where Andreessen went to college, was then one of four US universities government-funded as hubs for NSFNET, which became the internet.

The test is whether, while Andreessen attended (about 1989–1993), the University of Illinois (through NCSA) was one of four government-funded hub or supercomputer-centre sites tied to NSFNET, the backbone that became part of the internet. True: UIUC was one of exactly four such federally funded hubs or centres. Mostly true: UIUC was one of a small, select group of NSF-funded NSFNET hub or supercomputer-centre sites, but the group was not exactly four (for example five or six). Mostly false: UIUC was only an ordinary NSFNET-connected site among many, so the special-hub claim overstates its role. False: UIUC had no such funded hub role.

Set before the research began.

1. E1 High Performance Computing and Networking for Science (Part 4 of 5) U.S. Congress, Office of Technology Assessment (OTA) · 1989

   “The University of Illinois at Urbana-Champaign, Cornell University and the John von Neumann Center in Princeton. A fifth site, Pittsburgh, was added in early 1986.”

2. E2 National Center for Supercomputing Applications - Wikipedia Wikipedia

   “The result was that four supercomputer centers would be chartered (Cornell, Illinois, Princeton, and San Diego), with a fifth (Pittsburgh) added later.”

3. E3 Retiring the NSFNET Backbone Service: Chronicling the End of an Era Merit Network (reprinted from ConneXions, Vol. 10, No. 4) · April 1996

   “The first NSFNET, a 56Kbps backbone based on LSI-11 Fuzzball routers, went into production in 1985 and linked the six nationally funded supercomputer centers (the five NSF centers and the National Center for Atmospheric Research).”

4. E4 Retiring the NSFNET Backbone Service: Chronicling the End of an Era Merit Network (reprinted from ConneXions, Vol. 10, No. 4) · April 1996

   “In late May 1990, Merit's cooperative agreement with NSF was modified to cover the additional work. By the end of the year, Merit, SDSC, and NCSA were connected to an early T3 service”

E1 and E2 show that NSF originally chartered four supercomputer centres, one of them the University of Illinois at Urbana-Champaign, and added a fifth, Pittsburgh, in early 1986. E3 says the first NSFNET backbone, in production from 1985, linked six nationally funded supercomputer centres: the five NSF centres plus NCAR. E4 shows NCSA was among the first sites connected to the T3 backbone in 1990. So while Andreessen attended (about 1989–1993), UIUC was one of a small, select group of funded NSFNET hub sites, but that group was five or six, not exactly four. Under the criteria, that makes the claim mostly true.