subnet.im

AS12066ALTICE DOMINICANA S.A.

Dominican RepublicRegistryLACNICTypeEyeball

As of 10th November 2026, AS12066 (ALTICE DOMINICANA S.A.), an access network registered in the Dominican Republic with LACNIC, originates 69 IPv4 prefixes covering 38.1k addresses. By IPv4 address space that makes it the 5,084th-largest of the 80,723 networks we see originating IPv4, and the 8th-largest of 198 in the Dominican Republic. It is seen behind 1 upstream network, most often AS28118 (ALTICE DOMINICANA S.A.). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 9% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

69

IPv6 prefixes

0

IPv4 addresses

38.1k

IPv6 /64s

0

Upstream graph

The networks AS12066 is seen behind, one and two hops out, drawn from real AS paths.

AS12066Toward the internet core
Upstream graph for AS12066: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12066ALTICE DOMINICANA…This networkAS28118ALTICE DOMINICANA…AS6461Zayo BandwidthAS23520Columbus Networks…

Networks observed one and two hops upstream of AS12066 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS12066
NetworkCountryRelationshipPathsVantage pts
AS28118ALTICE DOMINICANA S.A.DOPeer51676

Prefixes

All 69

The largest blocks AS12066 originates, widest first.

Largest prefixes originated by AS12066
PrefixAddressesVisibility
148.103.112.0/212k1/76
186.120.144.0/212k1/76
186.150.136.0/212k1/76
186.150.192.0/212k1/76
186.150.240.0/212k1/76
186.150.248.0/212k1/76
200.42.192.0/212k1/76
148.103.120.0/221k1/76
148.103.240.0/221k1/76
186.120.20.0/221k1/76

Routing health

How AS12066'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%69
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more8.7%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%91.3%63

Prefix sizes

IPv4 — 69 prefixes

Recent changes

Announcements that started or stopped since 11th Oct 2026.

  • Withdrawn186.120.106.0/2323rd Oct 2026
  • Withdrawn186.120.111.0/2423rd Oct 2026
  • Withdrawn186.120.177.0/2423rd Oct 2026
  • Withdrawn186.149.187.0/2423rd Oct 2026
  • Withdrawn186.149.26.0/2423rd Oct 2026
  • Withdrawn186.149.27.0/2423rd Oct 2026
  • Withdrawn186.149.29.0/2423rd Oct 2026
  • Withdrawn186.149.30.0/2423rd Oct 2026
  • Withdrawn186.149.56.0/2323rd Oct 2026
  • Announced186.120.106.0/2322nd Oct 2026
  • Announced186.120.111.0/2422nd Oct 2026
  • Announced186.120.177.0/2422nd Oct 2026

29 announced and 29 withdrawn in all; the most recent are shown.

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