subnet.im

AS6208FiberX

Puerto RicoRegistryARIN

As of 23rd October 2026, AS6208 (FiberX), a network registered in Puerto Rico with ARIN, originates 4 IPv4 prefixes covering 4.9k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 15,834th-largest of the 79,659 networks we see originating IPv4, and the 17th-largest of 97 in Puerto Rico. It is seen behind 10 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS3257 (GTT Communications Inc.), and in front of 23 downstream networks. 67% 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

4

IPv6 prefixes

2

IPv4 addresses

4.9k

IPv6 /64s

4.3B

Upstream graph

The networks AS6208 is seen behind, one and two hops out, drawn from real AS paths.

AS6208Toward the internet core
Upstream graph for AS6208: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS6208FiberXThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3257GTT Communication…AS6939Hurricane Electri…AS21559OSNETAS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS6667Elisa OyjAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS6208 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

100

adjacent networks

Upstreams
1010%
Peers
6767%
Downstreams
2323%

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

Upstreams of AS6208
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer3,297115
AS3257GTT Communications Inc.USPeer99793
AS1299Arelion (fka. Telia Carrier)SEPeer69246
AS174Cogent Communications, LLCUSPeer49527
AS21559OSNETPRPeer19111
AS14537Continent 8 LLCUSPeer1224
AS4230Claro (Embratel)BRPeer462
AS3303Swisscom (Schweiz) AGCHPeer441
AS7195EdgeUnoCOPeer81
AS393573Fuse Telecom LLCPRPeer21

Prefixes

The largest blocks AS6208 originates, widest first.

Largest prefixes originated by AS6208
PrefixAddressesVisibility
38.158.208.0/204.1k77/77
104.238.194.0/2425677/77
154.64.223.0/2425677/77
199.116.63.0/2425677/77
2604:fcc0::/324.3B × /6464/64
2604:fcc0:5000::/4865.5k × /6464/64

Routing health

How AS6208'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

  • Valid66.7%4
  • Invalid0.0%0
  • No ROA33.3%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 2 prefixes

  • /324.3B × /6450.0%1
  • /4865.5k × /6450.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS6208 started or stopped in this period.

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