subnet.im

AS397700LXXIX Project Lab LLC

United StatesRegistryARINTypeContent

As of 26th September 2026, AS397700 (LXXIX Project Lab LLC), a content network registered in the United States with ARIN, originates 3 IPv4 prefixes covering 1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 35,810th-largest of the 79,516 networks we see originating IPv4, and the 8,138th-largest of 18,424 in the United States. It is seen behind 6 upstream networks, most often AS3356 (Lumen (Level 3)) and AS27552 (TowardEX Technologies International…). 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

3

IPv6 prefixes

1

IPv4 addresses

1k

IPv6 /64s

268M

Upstream graph

The networks AS397700 is seen behind, one and two hops out, drawn from real AS paths.

AS397700Toward the internet core
Upstream graph for AS397700: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS397700LXXIX Project Lab…This networkAS174Cogent Communicat…AS3356Lumen (Level 3)AS6939Hurricane Electri…AS27552TowardEX Technolo…AS395748NetSpeed LLCAS151326DCConnect Communi…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS1299Arelion (fka. Tel…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS46887Zayo (fka. Crown …

Networks observed one and two hops upstream of AS397700 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

15

adjacent networks

Upstreams
640%
Peers
960%
Downstreams
00%

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

Upstreams of AS397700
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer11569
AS27552TowardEX Technologies International, Inc.USPeer9143
AS174Cogent Communications, LLCUSPeer4434
AS395748NetSpeed LLCUSPeer3618
AS6939Hurricane Electric LLCUSPeer147
AS293ESnetUSPeer31

Prefixes

The largest blocks AS397700 originates, widest first.

Largest prefixes originated by AS397700
PrefixAddressesVisibility
79.172.200.0/2351280/81
23.188.24.0/2425680/81
74.50.0.0/2425681/81
2602:f826::/36268M × /6462/64

Routing health

How AS397700'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%4
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

IPv6 — 1 prefixes

  • /36268M × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS397700 started or stopped in this period.

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