subnet.im

AS10753Level 3 Parent, LLC

United StatesRegistryARIN

As of 10th November 2026, AS10753 (Level 3 Parent, LLC), a network registered in the United States with ARIN, originates 1,149 IPv4 prefixes covering 743k addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 570th-largest of the 80,733 networks we see originating IPv4, and the 136th-largest of 18,751 in the United States. It is seen behind 12 upstream networks, most often AS3356 (Lumen (Level 3)) and AS3549 (Lumen (fka. Global Crossing)), and in front of 49 downstream networks. 43% of its announcements have a valid RPKI ROA; 8 are RPKI-invalid. 70% of its routes reach at least 90% of full-feed peers, and 50 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1,149

IPv6 prefixes

17

IPv4 addresses

743k

IPv6 /64s

1.1M

Upstream graph

The networks AS10753 is seen behind, one and two hops out, drawn from real AS paths.

AS10753Toward the internet core
Upstream graph for AS10753: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS10753Level 3 Parent, L…This networkAS202Level 3 Parent, L…AS701Verizon BusinessAS3356Lumen (Level 3)AS3549Lumen (fka. Globa…AS9009M247 Europe SRLAS2914NTT America, Inc.AS1299Arelion (fka. Tel…AS4775Globe TelecomsAS174Cogent Communicat…

Networks observed one and two hops upstream of AS10753 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

124

adjacent networks

Upstreams
1210%
Peers
6351%
Downstreams
4940%

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

Upstreams of AS10753
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer66,565138
AS3549Lumen (fka. Global Crossing)USPeer3,126138
AS9009M247 Europe SRLROPeer44676
AS202Level 3 Parent, LLCUSPeer25075
AS701Verizon BusinessUSPeer21772
AS33652Comcast Cable Communications, LLCUSPeer13266
AS22056SitelUSPeer7676
AS18747IFX CorporationUSPeer7575
AS6461Zayo BandwidthUSPeer7474
AS15305Syringa Networks, LLCUSPeer7171

Prefixes

All 1,166

The largest blocks AS10753 originates, widest first.

Largest prefixes originated by AS10753
PrefixAddressesVisibility
138.15.0.0/1665.5k76/76
164.156.0.0/1665.5k38/76
147.207.0.0/1732.8k76/76
147.207.128.0/1732.8k76/76
164.156.128.0/1732.8k38/76
164.157.0.0/1732.8k38/76
199.20.128.0/1732.8k38/76
164.156.64.0/1816.4k38/76
164.157.128.0/1816.4k38/76
199.5.64.0/1816.4k38/76

Routing health

How AS10753'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

  • Valid42.9%500
  • Invalid0.7%8
  • No ROA56.4%658

Propagation

  • Globally propagated90% of full-feed peers or more70.1%817
  • Partially propagated40% to 90%5.2%61
  • Seen by few peersUnder 40%24.7%288

Prefix sizes

IPv4 — 1,149 prefixes

IPv6 — 17 prefixes

  • /4865.5k × /64100.0%17

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn85.254.178.0/2310th Nov 2026
  • Withdrawn85.254.29.0/2410th Nov 2026
  • Withdrawn82.39.136.0/2410th Nov 2026
  • Announced64.132.154.192/2610th Nov 2026
  • Withdrawn64.132.154.192/269th Nov 2026
  • Announced189.125.0.224/279th Nov 2026
  • Withdrawn200.196.69.32/279th Nov 2026
  • Withdrawn189.125.0.224/279th Nov 2026
  • Announced200.196.81.32/278th Nov 2026
  • Withdrawn200.196.81.32/278th Nov 2026
  • Announced189.125.210.0/256th Nov 2026
  • Announced2001:13b0:802e::/486th Nov 2026

204 announced and 146 withdrawn in all; the most recent are shown.

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