subnet.im

AS15149Core Technology Services, Inc.

United StatesRegistryARIN

As of 27th September 2026, AS15149 (Core Technology Services, Inc.), a network registered in the United States with ARIN, originates 7 IPv4 prefixes covering 25.6k addresses. By IPv4 address space that makes it the 6,141st-largest of the 79,516 networks we see originating IPv4, and the 2,067th-largest of 18,424 in the United States. It is seen behind 2 upstream networks, most often AS29838 (Atlantic Metro Communications II, Inc.) and AS6939 (Hurricane Electric 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

7

IPv6 prefixes

0

IPv4 addresses

25.6k

IPv6 /64s

0

Upstream graph

The networks AS15149 is seen behind, one and two hops out, drawn from real AS paths.

AS15149Toward the internet core
Upstream graph for AS15149: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS15149Core Technology S…This networkAS6939Hurricane Electri…AS29838Atlantic Metro Co…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS15149 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

6

adjacent networks

Upstreams
233%
Peers
350%
Downstreams
117%

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

Upstreams of AS15149
NetworkCountryRelationshipPathsVantage pts
AS29838Atlantic Metro Communications II, Inc.USPeer32954
AS6939Hurricane Electric LLCUSPeer25877

Prefixes

The largest blocks AS15149 originates, widest first.

Largest prefixes originated by AS15149
PrefixAddressesVisibility
216.150.64.0/198.2k81/81
216.169.96.0/198.2k81/81
72.9.96.0/204.1k81/81
66.199.224.0/212k81/81
64.29.188.0/221k81/81
66.199.232.0/221k81/81
96.45.68.0/221k81/81

Routing health

How AS15149'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%7
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%7
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 7 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS15149 started or stopped in this period.

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