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AS12148Clemson University

United StatesRegistryARIN

As of 24th October 2026, AS12148 (Clemson University), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 98.8k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 2,409th-largest of the 79,664 networks we see originating IPv4, and the 766th-largest of 18,488 in the United States. It is seen behind 3 upstream networks, most often AS2722 (CULR, LLC) and AS195 (San Diego Supercomputer Center), and in front of 1 downstream network. None of its announcements have a valid RPKI ROA. 83% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

4

IPv6 prefixes

2

IPv4 addresses

98.8k

IPv6 /64s

1.1M

Upstream graph

The networks AS12148 is seen behind, one and two hops out, drawn from real AS paths.

AS12148Toward the internet core
Upstream graph for AS12148: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12148Clemson UniversityThis networkAS195San Diego Superco…AS226Los NettosAS2722CULR, LLCAS2152CENIC - CalRENAS22773Cox Communication…AS567Los NettosAS2914NTT America, Inc.AS2721CULR, LLCAS10490Georgia Institute…

Networks observed one and two hops upstream of AS12148 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

8

adjacent networks

Upstreams
338%
Peers
450%
Downstreams
113%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS12148
NetworkCountryRelationshipPathsVantage pts
AS2722CULR, LLCUSPeer667138
AS195San Diego Supercomputer CenterUSPeer101101
AS226Los NettosUSPeer7676

Prefixes

The largest blocks AS12148 originates, widest first.

Largest prefixes originated by AS12148
PrefixAddressesVisibility
130.127.0.0/1665.5k75/76
198.21.128.0/1732.8k75/76
192.5.219.0/2425676/76
192.42.3.0/2425676/76
2620:103:a000::/441M × /6461/63
2620:103:a00a::/4865.5k × /6425/63

Routing health

How AS12148's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%6

Propagation

  • Globally propagated90% of full-feed peers or more83.3%5
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%16.7%1

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 2 prefixes

  • /441M × /6450.0%1
  • /4865.5k × /6450.0%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS12148 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.