subnet.im

AS10753Level 3 Parent, LLC

United StatesRegistryARIN

As of 26th September 2026, AS10753 (Level 3 Parent, LLC), a network registered in the United States with ARIN, originates 1,081 IPv4 prefixes covering 708k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 571st-largest of the 79,516 networks we see originating IPv4, and the 137th-largest of 18,424 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 52 downstream networks. 41% of its announcements have a valid RPKI ROA; 4 are RPKI-invalid. 72% of its routes reach at least 90% of full-feed peers, and 34 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1,081

IPv6 prefixes

16

IPv4 addresses

708k

IPv6 /64s

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…AS22284U.S. Department o…AS174Cogent 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

129

adjacent networks

Upstreams
129%
Peers
6550%
Downstreams
5240%

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

Upstreams of AS10753
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer68,587145
AS3549Lumen (fka. Global Crossing)USPeer3,282145
AS9009M247 Europe SRLROPeer47681
AS202Level 3 Parent, LLCUSPeer27480
AS701Verizon BusinessUSPeer23277
AS22056SitelUSPeer8181
AS18747IFX CorporationUSPeer8080
AS6461Zayo BandwidthUSPeer7979
AS15305Syringa Networks, LLCUSPeer7777
AS33652Comcast Cable Communications, LLCUSPeer63

Prefixes

All 1,097

The largest blocks AS10753 originates, widest first.

Largest prefixes originated by AS10753
PrefixAddressesVisibility
138.15.0.0/1665.5k81/81
164.156.0.0/1665.5k38/81
147.207.0.0/1732.8k81/81
147.207.128.0/1732.8k81/81
164.156.128.0/1732.8k38/81
164.157.0.0/1732.8k38/81
199.20.128.0/1732.8k38/81
164.156.64.0/1816.4k38/81
164.157.128.0/1816.4k38/81
199.5.64.0/1816.4k38/81

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

  • Valid41.0%450
  • Invalid0.4%4
  • No ROA58.6%643

Propagation

  • Globally propagated90% of full-feed peers or more72.1%791
  • Partially propagated40% to 90%3.6%40
  • Seen by few peersUnder 40%24.2%266

Prefix sizes

IPv4 — 1,081 prefixes

IPv6 — 16 prefixes

  • /4865.5k × /64100.0%16

Recent changes

Announcements that started or stopped since 27th Aug 2026.

50 announced and 32 withdrawn in all; the most recent are shown.

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