$ query “AS11537” --type=asn → 1 result(s)

AS11537 · INTERNET2-RESEARCH-EDU

Internet2

AS11537 is operated by Internet2 and serves as a major transit provider, registered in the United States since 1998. The system announces a respectable 10 496 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in the United States.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #44 by Reach — Top 100 by customer cone size
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Education/Research
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
September 23, 1998
Last Changed
March 04, 2026
Last Seen
October 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
23 / 16
IPv6 Prefixes (raw / aggregated)
9 / 9
IPv4 Addresses
10 496
Largest IPv4 Prefix
/20 (4 096 addresses)
Largest IPv6 Prefix
/40
Geolocated Countries
🇺🇸 United States (10 496 IPs)
Prefix Changed
October 07, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
1 upstream providing transit
Peers
11 networks exchanging traffic without transit
Downstream Customers
108 downstreams buying transit
Unclassified
12 unclassified BGP neighbors
Degree
132 unique BGP neighbors
Reach
1 925 networks in customer cone

Upstream Providers (1)

Prefix Lists

IPv4 Prefixes (23 total)

  • 64.57.16.0/20 (4 096 addresses (/20 prefix))
  • 163.253.0.0/22 (1 024 addresses (/22 prefix))
  • 163.253.12.0/22 (1 024 addresses (/22 prefix))
  • 163.253.16.0/23 (512 addresses (/23 prefix))
  • 163.253.56.0/23 (512 addresses (/23 prefix))
  • 163.253.66.0/23 (512 addresses (/23 prefix))
  • 163.253.80.0/23 (512 addresses (/23 prefix))
  • 162.252.70.0/24 (256 addresses (/24 prefix))
  • 163.253.9.0/24 (256 addresses (/24 prefix))
  • 163.253.23.0/24 (256 addresses (/24 prefix))
  • 163.253.28.0/24 (256 addresses (/24 prefix))
  • 163.253.63.0/24 (256 addresses (/24 prefix))
  • 163.253.64.0/24 (256 addresses (/24 prefix))
  • 163.253.83.0/24 (256 addresses (/24 prefix))
  • 198.71.45.0/24 (256 addresses (/24 prefix))
  • 198.71.46.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (9 total)

  • 2001:468:f00::/40
  • 2001:468:2f02::/47
  • 2001:468:17::/48
  • 2001:468:1f0c::/48
  • 2001:468:1f17::/48
  • 2001:468:2f01::/48
  • 2001:468:2f0b::/48
  • 2001:468:2f0d::/48
  • 2001:468:ef01::/48