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AS11979Bluegrass Network LLC

United StatesRegistryARIN

As of 22nd October 2026, AS11979 (Bluegrass Network LLC), a network registered in the United States with ARIN, originates 25 IPv4 prefixes covering 20k addresses and 7 IPv6 prefixes. By IPv4 address space that makes it the 7,093rd-largest of the 79,655 networks we see originating IPv4, and the 2,323rd-largest of 18,475 in the United States. It is seen behind 10 upstream networks, most often AS3356 (Lumen (Level 3)) and AS174 (Cogent Communications, LLC), and in front of 5 downstream networks. 3% 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.

At a glance

IPv4 prefixes

25

IPv6 prefixes

7

IPv4 addresses

20k

IPv6 /64s

4.4B

Upstream graph

The networks AS11979 is seen behind, one and two hops out, drawn from real AS paths.

AS11979Toward the internet core
Upstream graph for AS11979: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS11979Bluegrass Network…This networkAS174Cogent Communicat…AS3257GTT Communication…AS3356Lumen (Level 3)AS6939Hurricane Electri…AS49544i3D.net B.VAS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS6667Elisa OyjAS398465Rackdog LLCAS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS20130Depaul University

Networks observed one and two hops upstream of AS11979 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

55

adjacent networks

Upstreams
1018%
Peers
4073%
Downstreams
59%

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

Upstreams of AS11979
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer7,23964
AS174Cogent Communications, LLCUSPeer2,95940
AS3257GTT Communications Inc.USPeer2,57847
AS6939Hurricane Electric LLCUSPeer1,02816
AS49544i3D.net B.VNLPeer3202
AS35280F5 Networks SARLFRPeer3011
AS4775Globe TelecomsPHPeer1161
AS24482SG.GSSGPeer752
AS293ESnetUSPeer661
AS14537Continent 8 LLCUSPeer142

Prefixes

All 32

The largest blocks AS11979 originates, widest first.

Largest prefixes originated by AS11979
PrefixAddressesVisibility
66.38.64.0/204.1k76/77
45.56.208.0/212k76/77
64.250.64.0/212k76/77
66.38.48.0/212k76/77
67.221.40.0/212k76/77
64.250.72.0/221k76/77
66.38.16.0/221k76/77
64.52.16.0/2351276/77
64.250.76.0/2351276/77
66.38.2.0/2351276/77

Routing health

How AS11979'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

  • Valid3.1%1
  • Invalid0.0%0
  • No ROA96.9%31

Propagation

  • Globally propagated90% of full-feed peers or more100.0%32
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 25 prefixes

IPv6 — 7 prefixes

  • /324.3B × /6414.3%1
  • /4016.8M × /6485.7%6

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

No announcement by AS11979 started or stopped in this period.

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