AS11279 — GEORGE-MASON-UNIV
Network type: education
AS11279 announces 3 IPv4 prefixes covering 66,048 addresses and 1 IPv6 prefixes.
About this network
GEORGE-MASON-UNIV is the campus network of George Mason University, Virginia's largest public research university, based in Fairfax with additional campuses in Arlington, Manassas and Front Royal. This is a straightforward single-institution academic AS.
What it's used for
RIS observes 16 IPv4 prefixes carrying 66,048 addresses, one IPv6 prefix (2620:10e:6000::/40), and three observed neighbours. Read the prefix count against the address count and the estate is smaller than it looks: almost all 16 announcements are the same /16, 129.174.0.0/16, sliced into /17s, /18s and /19s and announced alongside the aggregate. Deaggregating a legacy /16 like that is standard university practice, used for traffic engineering across multiple upstreams and to make the space harder to hijack with a more-specific. Only two prefixes sit outside it: 192.5.215.0/24 and 199.26.254.0/24.
Three neighbours is the classic research-and-education edge — connections through the state and national R&E networks plus commercial transit for redundancy. The space carries campus infrastructure: student and staff wired and wireless access, residence halls, library and administrative systems, and research computing.
Notable
Every prefix RDAP resolved is registered to George Mason University itself, under the handles MASONET, MASONNET and MASONETCS. A /40 of IPv6 is a generous, modern allocation and it is announced, so the campus is genuinely v6-reachable rather than merely v6-allocated.
Interesting
The one reverse-DNS record the pack sampled is the informative one. 199.26.254.5 answers as a199-26-254-212.deploy.akamaitechnologies.com — an Akamai content-delivery node living inside the university's own registered /24. Universities routinely host on-net caches so that streaming, software updates and course content are served from campus instead of crossing the transit link. It is also a good reminder of what reverse DNS does and does not tell you: the PTR names Akamai, but the block is George Mason's, and rDNS describes what space carries, never who holds it.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 129.174.0.0/16
- 192.5.215.0/24
- 199.26.254.0/24
- 2620:10e:6000::/40
Upstream networks
Adjacent networks
Internet exchanges
- Equinix Internet Exchange Ashburn — Ashburn, United States
awaiting query
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