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AS19005J2 Global Ventures, LLC

United StatesRegistryARIN

As of 13th November 2026, AS19005 (J2 Global Ventures, LLC), a network registered in the United States with ARIN, originates 11 IPv4 prefixes covering 12.3k addresses. By IPv4 address space that makes it the 9,562nd-largest of the 80,825 networks we see originating IPv4, and the 2,978th-largest of 18,772 in the United States. It is seen behind 2 upstream networks, most often AS577 (Bell Canada) and AS15290 (Zayo Bandwidth). 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

11

IPv6 prefixes

0

IPv4 addresses

12.3k

IPv6 /64s

0

Upstream graph

The networks AS19005 is seen behind, one and two hops out, drawn from real AS paths.

AS19005Toward the internet core
Upstream graph for AS19005: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19005J2 Global Venture…This networkAS577Bell CanadaAS15290Zayo BandwidthAS1299Arelion (fka. Tel…AS1403EBOXAS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS19005 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS19005
NetworkCountryRelationshipPathsVantage pts
AS577Bell CanadaCAPeer59354
AS15290Zayo BandwidthUSPeer26525

Prefixes

The largest blocks AS19005 originates, widest first.

Largest prefixes originated by AS19005
PrefixAddressesVisibility
192.40.176.0/204.1k78/78
74.91.88.0/221k78/78
74.91.92.0/221k78/78
192.40.160.0/221k78/78
192.40.164.0/221k78/78
192.40.168.0/221k78/78
192.40.172.0/221k78/78
74.91.80.0/2351278/78
74.91.82.0/2351278/78
74.91.84.0/2351278/78

Routing health

How AS19005'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%11
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%11
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 11 prefixes

Recent changes

Announcements that started or stopped since 14th Oct 2026.

No announcement by AS19005 started or stopped in this period.

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