subnet.im

AS19893NTT Global Data Centers Americas, INC.

United StatesRegistryARIN

As of 23rd October 2026, AS19893 (NTT Global Data Centers Americas, INC.), a network registered in the United States with ARIN, originates 33 IPv4 prefixes covering 47.6k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 4,565th-largest of the 79,658 networks we see originating IPv4, and the 1,620th-largest of 18,483 in the United States. It is seen behind 2 upstream networks, most often AS2914 (NTT America, Inc.) and AS3356 (Lumen (Level 3)), and in front of 13 downstream networks. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

33

IPv6 prefixes

1

IPv4 addresses

47.6k

IPv6 /64s

268M

Upstream graph

The networks AS19893 is seen behind, one and two hops out, drawn from real AS paths.

AS19893Toward the internet core
Upstream graph for AS19893: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19893NTT Global Data C…This networkAS2914NTT America, Inc.AS3356Lumen (Level 3)AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS3549Lumen (fka. Globa…

Networks observed one and two hops upstream of AS19893 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

31

adjacent networks

Upstreams
26%
Peers
1652%
Downstreams
1342%

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

Upstreams of AS19893
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer2,307114
AS3356Lumen (Level 3)USPeer1,91669

Prefixes

All 34

The largest blocks AS19893 originates, widest first.

Largest prefixes originated by AS19893
PrefixAddressesVisibility
74.221.224.0/204.1k77/77
96.46.144.0/204.1k77/77
173.226.208.0/204.1k77/77
174.137.32.0/204.1k77/77
204.94.80.0/204.1k77/77
204.212.176.0/204.1k77/77
208.17.80.0/204.1k77/77
216.112.48.0/204.1k77/77
65.160.224.0/212k77/77
173.254.176.0/212k77/77

Routing health

How AS19893'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%34

Propagation

  • Globally propagated90% of full-feed peers or more100.0%34
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 33 prefixes

IPv6 — 1 prefixes

  • /36268M × /64100.0%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS19893 started or stopped in this period.

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