subnet.im

AS2734CoreSite

United StatesRegistryARINTypeCarrier

As of 26th September 2026, AS2734 (CoreSite), a transit carrier registered in the United States with ARIN, originates 65 IPv4 prefixes covering 49.7k addresses and 21 IPv6 prefixes. By IPv4 address space that makes it the 4,469th-largest of the 79,516 networks we see originating IPv4, and the 1,587th-largest of 18,424 in the United States. It is seen behind 13 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS3257 (GTT Communications Inc.), and in front of 21 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

65

IPv6 prefixes

21

IPv4 addresses

49.7k

IPv6 /64s

7.2B

Upstream graph

The networks AS2734 is seen behind, one and two hops out, drawn from real AS paths.

AS2734Toward the internet core
Upstream graph for AS2734: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS2734CoreSiteThis networkAS2914NTT America, Inc.AS3257GTT Communication…AS6939Hurricane Electri…AS49544i3D.net B.VAS58511Swoop (Anycast Gl…AS3130RGnet OUAS6667Elisa OyjAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS3356Lumen (Level 3)AS3491PCCW Global (HK) …

Networks observed one and two hops upstream of AS2734 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

638

adjacent networks

Upstreams
132%
Peers
60495%
Downstreams
213%

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

Upstreams of AS2734
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer7,785124
AS3257GTT Communications Inc.USPeer1,18587
AS2914NTT America, Inc.USPeer1,16423
AS49544i3D.net B.VNLPeer1462
AS58511Swoop (Anycast Global Backbone)AUPeer1462
AS4775Globe TelecomsPHPeer1422
AS7195EdgeUnoCOPeer1292
AS3303Swisscom (Schweiz) AGCHPeer1181
AS35280F5 Networks SARLFRPeer1171
AS25091IP-Max SACHPeer993

Prefixes

All 86

The largest blocks AS2734 originates, widest first.

Largest prefixes originated by AS2734
PrefixAddressesVisibility
142.255.192.0/1816.4k81/81
66.35.72.0/212k81/81
66.35.88.0/212k81/81
208.84.144.0/212k81/81
66.35.68.0/221k81/81
66.128.148.0/221k81/81
66.128.156.0/221k81/81
98.158.144.0/221k81/81
98.158.152.0/221k81/81
199.119.180.0/221k81/81

Routing health

How AS2734'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

  • Valid100.0%86
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%86
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 65 prefixes

IPv6 — 21 prefixes

  • /324.3B × /644.8%1
  • /36268M × /6452.4%11
  • /4865.5k × /6442.9%9

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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