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AS401866Master IT Support

Puerto RicoRegistryARINTypeContent

As of 23rd October 2026, AS401866 (Master IT Support), a content network registered in Puerto Rico with ARIN, originates 3 IPv4 prefixes covering 768 addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 44,967th-largest of the 79,659 networks we see originating IPv4, and the 44th-largest of 97 in Puerto Rico. It is seen behind 4 upstream networks, most often AS60068 (Datacamp Limited (CDN77 / DataPacket)) and AS23470 (ReliableSite.Net LLC), and in front of 1 downstream network. 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

3

IPv6 prefixes

2

IPv4 addresses

768

IPv6 /64s

131k

Upstream graph

The networks AS401866 is seen behind, one and two hops out, drawn from real AS paths.

AS401866Toward the internet core
Upstream graph for AS401866: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS401866Master IT SupportThis networkAS23470ReliableSite.Net …AS46962HRCOMAS60068Datacamp Limited …AS199524Gcore S.A.AS2914NTT America, Inc.AS6208FiberXAS1299Arelion (fka. Tel…AS6453TATA Communicatio…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS401866 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

9

adjacent networks

Upstreams
444%
Peers
444%
Downstreams
111%

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

Upstreams of AS401866
NetworkCountryRelationshipPathsVantage pts
AS60068Datacamp Limited (CDN77 / DataPacket)GBPeer23477
AS23470ReliableSite.Net LLCUSPeer140140
AS199524Gcore S.A.LUPeer7373
AS46962HRCOMPRPeer6464

Prefixes

The largest blocks AS401866 originates, widest first.

Largest prefixes originated by AS401866
PrefixAddressesVisibility
23.143.4.0/2425677/77
64.93.68.0/2425677/77
64.93.69.0/2425676/77
2604:19a0:1::/4865.5k × /6464/64
2604:19a0:3::/4865.5k × /6463/64

Routing health

How AS401866'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%5
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%5
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS401866 started or stopped in this period.

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