$ query “AS2734” --type=asn → 1 result(s)

AS2734 · CORESITE

CoreSite

AS2734 belongs to CoreSite and is a mid-size transit provider, established in the United States in 2009. The system announces a respectable 49 664 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Hong Kong SAR China and the United Kingdom, and a smaller footprint in another country. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
September 01, 2009
Last Changed
March 04, 2026
Last Seen
April 29, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
62 / 30
IPv6 Prefixes (raw / aggregated)
21 / 9
IPv4 Addresses
49 664
Largest IPv4 Prefix
/18 (16 384 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (51 456 IPs), 🇭🇰 Hong Kong SAR China (48 IPs), 🇬🇧 United Kingdom (32 IPs) and 1 more
Prefix Changed
April 28, 2026

Reputation

Reputation
Good — 2 flagged IPs out of 49 664 total (0.00%)

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Peers
630 networks exchanging traffic without transit
Downstream Customers
18 downstreams buying transit
Unclassified
3 unclassified BGP neighbors
Degree
655 unique BGP neighbors
Reach
24 networks in customer cone

Upstream Providers (4)

Prefix Lists

IPv4 Prefixes (62 total)

  • 142.255.192.0/18 (16 384 addresses (/18 prefix))
  • 66.35.64.0/20 (4 096 addresses (/20 prefix))
  • 66.128.144.0/20 (4 096 addresses (/20 prefix))
  • 67.212.144.0/20 (4 096 addresses (/20 prefix))
  • 98.158.152.0/21 (2 048 addresses (/21 prefix))
  • 208.84.144.0/21 (2 048 addresses (/21 prefix))
  • 208.77.96.0/21 (2 048 addresses (/21 prefix))
  • 66.35.88.0/21 (2 048 addresses (/21 prefix))
  • 208.74.72.0/21 (2 048 addresses (/21 prefix))
  • 66.35.84.0/22 (1 024 addresses (/22 prefix))
  • 208.64.252.0/22 (1 024 addresses (/22 prefix))
  • 98.158.144.0/22 (1 024 addresses (/22 prefix))
  • 204.9.200.0/22 (1 024 addresses (/22 prefix))
  • 199.119.180.0/22 (1 024 addresses (/22 prefix))
  • 192.34.20.0/22 (1 024 addresses (/22 prefix))
  • 173.45.174.0/23 (512 addresses (/23 prefix))
  • 199.197.10.0/23 (512 addresses (/23 prefix))
  • 98.158.150.0/23 (512 addresses (/23 prefix))
  • 162.216.127.0/24 (256 addresses (/24 prefix))
  • 192.150.41.0/24 (256 addresses (/24 prefix))
  • 204.9.204.0/24 (256 addresses (/24 prefix))
  • 204.9.207.0/24 (256 addresses (/24 prefix))
  • 206.223.143.0/24 (256 addresses (/24 prefix))
  • 208.64.248.0/24 (256 addresses (/24 prefix))
  • 208.64.251.0/24 (256 addresses (/24 prefix))
  • 173.45.170.0/24 (256 addresses (/24 prefix))
  • 98.158.148.0/24 (256 addresses (/24 prefix))
  • 66.35.83.0/24 (256 addresses (/24 prefix))
  • 208.78.157.0/24 (256 addresses (/24 prefix))
  • 66.35.80.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (21 total)

  • 2607:2f80::/32
  • 2605:6c00:4000::/34
  • 2604:3fc0:2000::/35
  • 2605:6c00:2000::/35
  • 2605:6c00:1000::/36
  • 2605:6c00:8000::/36
  • 2605:6c00:a000::/36
  • 2605:6c00::/45
  • 2605:6c00:8::/48