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AS3755NYSERNet

United StatesRegistryARIN

As of 23rd October 2026, AS3755 (NYSERNet), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 8.7k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 11,426th-largest of the 79,652 networks we see originating IPv4, and the 3,401st-largest of 18,475 in the United States. It is seen behind 2 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS174 (Cogent Communications, LLC), and in front of 3 downstream networks. 83% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

4

IPv6 prefixes

2

IPv4 addresses

8.7k

IPv6 /64s

131k

Upstream graph

The networks AS3755 is seen behind, one and two hops out, drawn from real AS paths.

AS3755Toward the internet core
Upstream graph for AS3755: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3755NYSERNetThis networkAS174Cogent Communicat…AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS3755 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

10

adjacent networks

Upstreams
220%
Peers
550%
Downstreams
330%

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

Upstreams of AS3755
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer846139
AS174Cogent Communications, LLCUSPeer29832

Prefixes

The largest blocks AS3755 originates, widest first.

Largest prefixes originated by AS3755
PrefixAddressesVisibility
137.238.240.0/204.1k77/77
199.110.240.0/204.1k77/77
192.77.173.0/2425677/77
199.109.84.0/2425677/77
2620:f:2::/4865.5k × /6463/64
2620:f:6::/4865.5k × /6462/64

Routing health

How AS3755'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

  • Valid83.3%5
  • Invalid0.0%0
  • No ROA16.7%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS3755 started or stopped in this period.

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