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AS19750Criteo Corp.

United StatesRegistryARIN

As of 24th October 2026, AS19750 (Criteo Corp.), a network registered in the United States with ARIN, originates 6 IPv4 prefixes covering 1.5k addresses and 14 IPv6 prefixes. By IPv4 address space that makes it the 31,124th-largest of the 79,671 networks we see originating IPv4, and the 7,126th-largest of 18,487 in the United States. It is seen behind 11 upstream networks, most often AS174 (Cogent Communications, LLC) and AS6461 (Zayo Bandwidth). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 90% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

6

IPv6 prefixes

14

IPv4 addresses

1.5k

IPv6 /64s

918k

Upstream graph

The networks AS19750 is seen behind, one and two hops out, drawn from real AS paths.

AS19750Toward the internet core
Upstream graph for AS19750: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19750Criteo Corp.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS6461Zayo BandwidthAS6939Hurricane Electri…AS7195EdgeUnoAS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS2914NTT America, Inc.AS20130Depaul UniversityAS32590Valve CorporationAS132337Axclusive

Networks observed one and two hops upstream of AS19750 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

46

adjacent networks

Upstreams
1124%
Peers
3576%
Downstreams
00%

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

Upstreams of AS19750
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer43471
AS6461Zayo BandwidthUSPeer37197
AS1299Arelion (fka. Telia Carrier)SEPeer31793
AS6939Hurricane Electric LLCUSPeer2012
AS7195EdgeUnoCOPeer52
AS13786Seaborn (Seabras USA, LLC)USPeer41
AS35280F5 Networks SARLFRPeer41
AS24482SG.GSSGPeer32
AS49544i3D.net B.VNLPeer32
AS293ESnetUSPeer21

Prefixes

The largest blocks AS19750 originates, widest first.

Largest prefixes originated by AS19750
PrefixAddressesVisibility
74.119.117.0/2425675/76
74.119.118.0/2425675/76
91.199.242.0/2425610/76
91.212.98.0/2425610/76
199.204.168.0/2425675/76
199.204.171.0/2425675/76
2001:550:1209::/4865.5k × /6458/63
2001:550:120a::/4865.5k × /6458/63
2001:550:2705::/4865.5k × /6458/63
2001:550:2706::/4865.5k × /6458/63

Routing health

How AS19750'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%20
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more90.0%18
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%10.0%2

Prefix sizes

IPv4 — 6 prefixes

IPv6 — 14 prefixes

  • /4865.5k × /64100.0%14

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS19750 started or stopped in this period.

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