201.187.0.0/17

Currently announced by AS14117 Telefonica del Sur, in the routed prefix 201.187.0.0/17.

Current ASN: AS14117; Telefonica del Sur
Routed prefix: 201.187.0.0/17; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: LACNIC; Chile · 201.187.0.0/17

Routing data · Nov 10, 2026, 14:22 UTC

ASN historyEvery routed prefix covering 201.187.0.0/17

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
201.187.0.0/17	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing

More specific routes42 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
201.187.0.0/20	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.16.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.17.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.18.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.19.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.20.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.21.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.22.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.23.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.24.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.32.0/21	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.40.0/22	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.44.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.46.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.48.0/20	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.64.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.65.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.66.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.67.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.68.0/22	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.72.0/24	AS14117	Telefonica del Sur	Chile	2026-10-30 10:22	2026-11-10 14:22	Announcing
201.187.73.0/24	AS14117	Telefonica del Sur	Chile	2026-10-30 10:22	2026-11-10 14:22	Announcing
201.187.74.0/24	AS14117	Telefonica del Sur	Chile	2026-10-30 10:22	2026-11-10 14:22	Announcing
201.187.75.0/24	AS14117	Telefonica del Sur	Chile	2026-10-30 10:22	2026-11-10 14:22	Announcing
201.187.76.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.78.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.79.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.82.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.83.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.84.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.85.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.86.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.88.0/22	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.92.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.112.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.114.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.116.0/22	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.120.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.121.0/24	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.122.0/23	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.124.0/22	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-11-10 14:22	Announcing
201.187.72.0/22	AS14117	Telefonica del Sur	Chile	Before monitoring	2026-10-30 08:23	Stopped

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

Look up another address

RIR allocation record

Registry: LACNIC
Allocated block: 201.187.0.0/17
Country: Chile
Allocation date: 2011-08-01
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.