subnet.im

AS19318Interserver, Inc

United StatesRegistryARINTypeEyeball

As of 11th November 2026, AS19318 (Interserver, Inc), an access network registered in the United States with ARIN, originates 127 IPv4 prefixes covering 219k addresses and 25 IPv6 prefixes. By IPv4 address space that makes it the 1,265th-largest of the 80,747 networks we see originating IPv4, and the 355th-largest of 18,752 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 36 downstream networks. 49% of its announcements have a valid RPKI ROA; 8 are RPKI-invalid. 86% of its routes reach at least 90% of full-feed peers, and 4 prefixes are also originated by another network.

At a glance

IPv4 prefixes

127

IPv6 prefixes

25

IPv4 addresses

219k

IPv6 /64s

468B

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

129

adjacent networks

Upstreams
1713%
Peers
7659%
Downstreams
3628%

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

Upstreams of AS19318
NetworkCountryRelationshipPathsVantage pts
AS6453TATA Communications (America) IncUSPeer5,53656
AS3257GTT Communications Inc.USPeer4,652127
AS174Cogent Communications, LLCUSPeer3,18761
AS6939Hurricane Electric LLCUSPeer2,67060
AS14537Continent 8 LLCUSPeer4304
AS49544i3D.net B.VNLPeer2582
AS18106Viewqwest Pte LtdSGPeer2182
AS22652Videotron LteeCAPeer2091
AS33891Core-Backbone GmbHDEPeer1982
AS24482SG.GSSGPeer1342

Prefixes

All 152

The largest blocks AS19318 originates, widest first.

Largest prefixes originated by AS19318
PrefixAddressesVisibility
162.35.0.0/1816.4k76/76
64.20.32.0/198.2k76/76
66.45.224.0/198.2k76/76
69.10.32.0/198.2k76/76
74.50.64.0/198.2k76/76
153.75.224.0/198.2k76/76
162.35.96.0/198.2k76/76
162.35.160.0/198.2k76/76
163.245.192.0/198.2k76/76
205.209.96.0/198.2k76/76

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

  • Valid49.3%75
  • Invalid5.3%8
  • No ROA45.4%69

Propagation

  • Globally propagated90% of full-feed peers or more85.5%130
  • Partially propagated40% to 90%1.3%2
  • Seen by few peersUnder 40%13.2%20

Prefix sizes

IPv4 — 127 prefixes

IPv6 — 25 prefixes

  • /2934.4B × /6452.0%13
  • /324.3B × /6420.0%5
  • /441M × /644.0%1
  • /4865.5k × /6424.0%6

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn185.242.244.0/2410th Nov 2026
  • Announced95.134.164.0/249th Nov 2026
  • Withdrawn194.61.9.0/249th Nov 2026
  • Announced64.204.112.0/248th Nov 2026
  • Withdrawn64.204.112.0/246th Nov 2026
  • Announced2601:2023::/325th Nov 2026
  • Withdrawn2601:2023::/325th Nov 2026
  • Withdrawn2601:2025::/325th Nov 2026
  • Announced2601:2025::/325th Nov 2026
  • Announced2601:2026::/325th Nov 2026
  • Withdrawn2601:2026::/325th Nov 2026
  • Withdrawn2601:2027::/325th Nov 2026

22 announced and 27 withdrawn in all; the most recent are shown.

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