subnet.im

AS13876FiberLight, LLC

United StatesRegistryARIN

As of 12th November 2026, AS13876 (FiberLight, LLC), a network registered in the United States with ARIN, originates 58 IPv4 prefixes covering 40.4k addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 4,961st-largest of the 80,772 networks we see originating IPv4, and the 1,734th-largest of 18,759 in the United States. It is seen behind 9 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3257 (GTT Communications Inc.), and in front of 53 downstream networks. 82% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

58

IPv6 prefixes

10

IPv4 addresses

40.4k

IPv6 /64s

4.3B

Upstream graph

The networks AS13876 is seen behind, one and two hops out, drawn from real AS paths.

AS13876Toward the internet core
Upstream graph for AS13876: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS13876FiberLight, LLCThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3257GTT Communication…AS6939Hurricane Electri…AS49544i3D.net B.VAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS215859Hetzner Cloud - S…AS6667Elisa OyjAS398465Rackdog LLCAS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS13876 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

153

adjacent networks

Upstreams
96%
Peers
9159%
Downstreams
5335%

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

Upstreams of AS13876
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer16,132142
AS3257GTT Communications Inc.USPeer292141
AS2914NTT America, Inc.USPeer261104
AS6939Hurricane Electric LLCUSPeer11715
AS49544i3D.net B.VNLPeer502
AS24482SG.GSSGPeer352
AS35280F5 Networks SARLFRPeer81
AS14537Continent 8 LLCUSPeer41
AS13786Seaborn (Seabras USA, LLC)USPeer11

Prefixes

All 68

The largest blocks AS13876 originates, widest first.

Largest prefixes originated by AS13876
PrefixAddressesVisibility
67.204.0.0/198.2k78/78
64.186.128.0/204.1k78/78
66.102.224.0/212k78/78
66.102.232.0/212k78/78
158.41.16.0/212k78/78
67.204.0.0/221k78/78
67.204.8.0/221k78/78
67.204.12.0/221k78/78
67.204.20.0/221k78/78
159.63.128.0/221k78/78

Routing health

How AS13876'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

  • Valid82.4%56
  • Invalid0.0%0
  • No ROA17.6%12

Propagation

  • Globally propagated90% of full-feed peers or more98.5%67
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.5%1

Prefix sizes

IPv4 — 58 prefixes

IPv6 — 10 prefixes

  • /324.3B × /6410.0%1
  • /4865.5k × /6490.0%9

Recent changes

Announcements that started or stopped since 13th Oct 2026.

  • Announced2607:8300:1003::/483rd Nov 2026
  • Withdrawn2607:8300:4::/4830th Oct 2026
  • Announced64.186.136.0/2227th Oct 2026
  • Withdrawn64.186.136.0/2227th Oct 2026
  • Withdrawn67.204.16.0/2222nd Oct 2026

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