subnet.im

AS20135Millennium Telcom LLC

United StatesRegistryARIN

As of 10th November 2026, AS20135 (Millennium Telcom LLC), a network registered in the United States with ARIN, originates 44 IPv4 prefixes covering 69.1k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 3,217th-largest of the 80,733 networks we see originating IPv4, and the 1,067th-largest of 18,751 in the United States. It is seen behind 5 upstream networks, most often AS174 (Cogent Communications, LLC) and AS6939 (Hurricane Electric LLC), and in front of 5 downstream networks. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers, and 15 prefixes are also originated by another network.

At a glance

IPv4 prefixes

44

IPv6 prefixes

2

IPv4 addresses

69.1k

IPv6 /64s

537M

Upstream graph

The networks AS20135 is seen behind, one and two hops out, drawn from real AS paths.

AS20135Toward the internet core
Upstream graph for AS20135: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20135Millennium Telcom…This networkAS174Cogent Communicat…AS5056Aureon Network Se…AS6461Zayo BandwidthAS6939Hurricane Electri…AS46887Zayo (fka. Crown …AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS32590Valve CorporationAS20130Depaul UniversityAS132337AxclusiveAS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS20135 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

16

adjacent networks

Upstreams
531%
Peers
638%
Downstreams
531%

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

Upstreams of AS20135
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer2,669133
AS6939Hurricane Electric LLCUSAdjacent54228
AS6461Zayo BandwidthUSPeer15177
AS5056Aureon Network ServicesUSPeer3618
AS46887Zayo (fka. Crown Castle)USPeer2727

Prefixes

All 46

The largest blocks AS20135 originates, widest first.

Largest prefixes originated by AS20135
PrefixAddressesVisibility
66.182.192.0/1816.4k75/76
38.13.96.0/198.2k75/76
38.187.32.0/198.2k75/76
149.120.64.0/198.2k75/76
38.3.16.0/204.1k75/76
68.71.64.0/204.1k75/76
38.48.36.0/221k75/76
38.48.40.0/221k75/76
38.48.48.0/221k75/76
38.48.52.0/221k75/76

Routing health

How AS20135'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%46

Propagation

  • Globally propagated90% of full-feed peers or more100.0%46
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 44 prefixes

IPv6 — 2 prefixes

  • /36268M × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS20135 started or stopped in this period.

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