subnet.im

AS19318Interserver, Inc

United StatesRegistryARINTypeEyeball

As of 26th September 2026, AS19318 (Interserver, Inc), an access network registered in the United States with ARIN, originates 127 IPv4 prefixes covering 220k addresses and 30 IPv6 prefixes. By IPv4 address space that makes it the 1,238th-largest of the 79,516 networks we see originating IPv4, and the 343rd-largest of 18,424 in the United States. It is seen behind 17 upstream networks, most often AS6453 (TATA Communications (America) Inc) and AS3257 (GTT Communications Inc.), and in front of 29 downstream networks. 55% of its announcements have a valid RPKI ROA; 10 are RPKI-invalid. 92% of its routes reach at least 90% of full-feed peers, and 7 prefixes are also originated by another network.

At a glance

IPv4 prefixes

127

IPv6 prefixes

30

IPv4 addresses

220k

IPv6 /64s

520B

Upstream graph

The networks AS19318 is seen behind, one and two hops out, drawn from real AS paths.

AS19318Toward the internet core
Upstream graph for AS19318: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19318Interserver, IncThis networkAS174Cogent Communicat…AS3257GTT Communication…AS6453TATA Communicatio…AS6939Hurricane Electri…AS14537Continent 8 LLCAS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS6667Elisa OyjAS398465Rackdog LLCAS8220COLTAS35280F5 Networks SARLAS20130Depaul University

Networks observed one and two hops upstream of AS19318 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

118

adjacent networks

Upstreams
1714%
Peers
7261%
Downstreams
2925%

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

Upstreams of AS19318
NetworkCountryRelationshipPathsVantage pts
AS6453TATA Communications (America) IncUSPeer5,80271
AS3257GTT Communications Inc.USPeer4,888136
AS174Cogent Communications, LLCUSPeer4,868115
AS6939Hurricane Electric LLCUSPeer1,80361
AS14537Continent 8 LLCUSPeer5394
AS49544i3D.net B.VNLPeer2682
AS18106Viewqwest Pte LtdSGPeer2402
AS33891Core-Backbone GmbHDEPeer2202
AS22652Videotron LteeCAPeer2151
AS24482SG.GSSGPeer1191

Prefixes

All 157

The largest blocks AS19318 originates, widest first.

Largest prefixes originated by AS19318
PrefixAddressesVisibility
162.35.0.0/1816.4k81/81
64.20.32.0/198.2k81/81
66.45.224.0/198.2k81/81
69.10.32.0/198.2k81/81
74.50.64.0/198.2k81/81
153.75.224.0/198.2k81/81
162.35.96.0/198.2k81/81
162.35.160.0/198.2k81/81
163.245.192.0/198.2k81/81
205.209.96.0/198.2k81/81

Routing health

How AS19318'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

  • Valid54.8%86
  • Invalid6.4%10
  • No ROA38.9%61

Propagation

  • Globally propagated90% of full-feed peers or more92.4%145
  • Partially propagated40% to 90%1.3%2
  • Seen by few peersUnder 40%6.4%10

Prefix sizes

IPv4 — 127 prefixes

IPv6 — 30 prefixes

  • /2934.4B × /6446.7%14
  • /324.3B × /6430.0%9
  • /441M × /643.3%1
  • /4865.5k × /6420.0%6

Recent changes

Announcements that started or stopped since 27th Aug 2026.

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