
27818 AS27818 - Cotesma, AR
Adjacency: 3 Upstream: 3 Downstream: 0
Upstream Adjacent AS list
AS22927 AS22927 - Telefonica de Argentina, AR
AS52361 AS52361 - ARSAT - Empresa Argentina de Soluciones Satelitales S.A., AR
AS7049 AS7049 - Silica Networks Argentina S.A., AR
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 7123 AS27818 ORIGIN Originate: 18688 /17.81 Transit: 0 /0.00 AS27818 - Cotesma, AR
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 1212 AS27818 AS27818 - Cotesma, AR 70 62 12 20 50 71.43% Prefix AS Path Aggregation Suggestion 131.161.152.0/23 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 131.161.152.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 131.161.153.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 131.161.152.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 131.161.153.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 131.161.153.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 131.161.152.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 131.161.154.0/24 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 131.161.155.0/24 4608 7575 7195 52361 27818 27818 27818 27818 27818 181.114.128.0/20 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 181.114.128.0/21 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 181.114.136.0/21 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.128.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.129.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.129.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.128.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.130.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.131.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.131.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.130.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.132.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.133.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.133.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.132.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.134.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.135.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.135.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.134.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.136.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.137.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.137.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.136.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.138.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.139.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.139.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.138.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.140.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.141.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.141.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.140.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.142.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.143.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.143.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.142.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.144.0/21 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 181.114.144.0/22 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 181.114.148.0/22 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.144.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.145.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.145.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.144.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.146.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.147.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.147.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.146.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.148.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.149.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.149.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.148.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.150.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.151.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.151.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.150.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 181.114.152.0/23 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 + Announce - aggregate of 181.114.152.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) and 181.114.153.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) 181.114.152.0/24 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.153.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) 181.114.153.0/24 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.152.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) 181.114.154.0/24 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 181.114.155.0/24 4608 7575 7195 52361 27818 27818 27818 27818 27818 181.114.156.0/23 4608 7575 7195 52361 27818 27818 27818 27818 27818 + Announce - aggregate of 181.114.156.0/24 (4608 7575 7195 52361 27818 27818 27818 27818 27818) and 181.114.157.0/24 (4608 7575 7195 52361 27818 27818 27818 27818 27818) 181.114.156.0/24 4608 7575 7195 52361 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.157.0/24 (4608 7575 7195 52361 27818 27818 27818 27818 27818) 181.114.157.0/24 4608 7575 7195 52361 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.156.0/24 (4608 7575 7195 52361 27818 27818 27818 27818 27818) 181.114.158.0/23 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 + Announce - aggregate of 181.114.158.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) and 181.114.159.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) 181.114.158.0/24 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.159.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) 181.114.159.0/24 4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 181.114.158.0/24 (4608 1221 4637 12956 22927 22927 22927 27818 27818 27818 27818 27818) 200.47.43.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 201.220.160.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 201.220.161.0/24 4608 1221 4637 12956 22927 27818 27818 27818 27818 27818 201.220.162.0/23 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 201.220.162.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 201.220.163.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.162.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.163.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.163.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.162.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.164.0/22 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 201.220.164.0/23 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 201.220.166.0/23 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.164.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.165.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.165.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.164.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.166.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.167.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.167.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.166.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.168.0/21 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 201.220.168.0/22 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 201.220.172.0/22 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.168.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.169.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.169.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.168.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.170.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.171.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.171.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.170.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.172.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.173.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.173.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.172.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.174.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.175.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.175.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.174.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.176.0/21 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 201.220.176.0/22 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 201.220.180.0/22 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.176.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.177.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.177.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.176.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.178.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.179.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.179.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.178.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.180.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.181.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.181.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.180.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.182.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.183.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.183.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.182.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.184.0/22 4777 2497 174 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 201.220.184.0/23 (4777 2497 174 7049 27818 27818 27818 27818 27818) and 201.220.186.0/23 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.184.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.185.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.185.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.184.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.186.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.187.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.187.0/24 4777 2497 174 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.186.0/24 (4777 2497 174 7049 27818 27818 27818 27818 27818) 201.220.188.0/22 4777 2497 174 7049 27818 27818 27818 27818 27818 27818 27818 201.220.188.0/22 4777 2516 6762 7049 27818 27818 27818 27818 27818 + Announce - aggregate of 201.220.188.0/23 (4777 2516 6762 7049 27818 27818 27818 27818 27818) and 201.220.190.0/23 (4777 2516 6762 7049 27818 27818 27818 27818 27818) 201.220.188.0/24 4777 2516 6762 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.189.0/24 (4777 2516 6762 7049 27818 27818 27818 27818 27818) 201.220.189.0/24 4777 2516 6762 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.188.0/24 (4777 2516 6762 7049 27818 27818 27818 27818 27818) 201.220.190.0/24 4777 2516 6762 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.191.0/24 (4777 2516 6762 7049 27818 27818 27818 27818 27818) 201.220.191.0/24 4777 2516 6762 7049 27818 27818 27818 27818 27818 - Withdrawn - aggregated with 201.220.190.0/24 (4777 2516 6762 7049 27818 27818 27818 27818 27818)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS27818 70 More Specifics 70 Total Advertisements AS27818 - Cotesma, AR
131.161.152.0/24 131.161.152.0/22
131.161.153.0/24 131.161.152.0/22
131.161.154.0/24 131.161.152.0/22
131.161.155.0/24 131.161.152.0/22
181.114.128.0/24 181.114.128.0/19
181.114.129.0/24 181.114.128.0/19
181.114.130.0/24 181.114.128.0/19
181.114.131.0/24 181.114.128.0/19
181.114.132.0/24 181.114.128.0/19
181.114.133.0/24 181.114.128.0/19
181.114.134.0/24 181.114.128.0/19
181.114.135.0/24 181.114.128.0/19
181.114.136.0/24 181.114.128.0/19
181.114.137.0/24 181.114.128.0/19
181.114.138.0/24 181.114.128.0/19
181.114.139.0/24 181.114.128.0/19
181.114.140.0/24 181.114.128.0/19
181.114.141.0/24 181.114.128.0/19
181.114.142.0/24 181.114.128.0/19
181.114.143.0/24 181.114.128.0/19
181.114.144.0/24 181.114.128.0/19
181.114.145.0/24 181.114.128.0/19
181.114.146.0/24 181.114.128.0/19
181.114.147.0/24 181.114.128.0/19
181.114.148.0/24 181.114.128.0/19
181.114.149.0/24 181.114.128.0/19
181.114.150.0/24 181.114.128.0/19
181.114.151.0/24 181.114.128.0/19
181.114.152.0/24 181.114.128.0/19
181.114.153.0/24 181.114.128.0/19
181.114.154.0/24 181.114.128.0/19
181.114.155.0/24 181.114.128.0/19
181.114.156.0/24 181.114.128.0/19
181.114.157.0/24 181.114.128.0/19
181.114.158.0/24 181.114.128.0/19
181.114.159.0/24 181.114.128.0/19
200.47.43.0/24 200.47.0.0/17
201.220.160.0/24 201.220.160.0/20
201.220.161.0/24 201.220.160.0/20
201.220.162.0/24 201.220.160.0/20
201.220.163.0/24 201.220.160.0/20
201.220.164.0/24 201.220.160.0/20
201.220.165.0/24 201.220.160.0/20
201.220.166.0/24 201.220.160.0/20
201.220.167.0/24 201.220.160.0/20
201.220.168.0/24 201.220.160.0/20
201.220.169.0/24 201.220.160.0/20
201.220.170.0/24 201.220.160.0/20
201.220.171.0/24 201.220.160.0/20
201.220.172.0/24 201.220.160.0/20
201.220.173.0/24 201.220.160.0/20
201.220.174.0/24 201.220.160.0/20
201.220.175.0/24 201.220.160.0/20
201.220.176.0/24 201.220.176.0/20
201.220.177.0/24 201.220.176.0/20
201.220.178.0/24 201.220.176.0/20
201.220.179.0/24 201.220.176.0/20
201.220.180.0/24 201.220.176.0/20
201.220.181.0/24 201.220.176.0/20
201.220.182.0/24 201.220.176.0/20
201.220.183.0/24 201.220.176.0/20
201.220.184.0/24 201.220.176.0/20
201.220.185.0/24 201.220.176.0/20
201.220.186.0/24 201.220.176.0/20
201.220.187.0/24 201.220.176.0/20
201.220.188.0/22 201.220.176.0/20
201.220.188.0/24 201.220.176.0/20
201.220.189.0/24 201.220.176.0/20
201.220.190.0/24 201.220.176.0/20
201.220.191.0/24 201.220.176.0/20
whois: 402625
IANA has recorded AS27818 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS27818\n % IP Client: 2401:2000:6660::13
% Joint Whois - whois.lacnic.net
% This server accepts single ASN, IPv4 or IPv6 queries
% LACNIC resource: whois.lacnic.net
% Copyright LACNIC lacnic.net
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% and to assist persons in obtaining information about or
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% By submitting a whois query, you agree to use this data
% only for lawful purposes.
% 2026-06-14 11:02:44 (-03 -03:00)
aut-num: AS27818
owner: Cotesma
ownerid: AR-COTE6-LACNIC
responsible: Andres Lacentra
address: Capitán Drury, 761, -
address: 8370 - San Martín de los Andes - NQN - NQ
country: AR
phone: +0054 2972427000 [102]
owner-c: ANM7
routing-c: ANM7
abuse-c: ANM7
created: 20060331
changed: 20060401
inetnum: 2803:3380::/32
inetnum: 131.161.152.0/22
inetnum: 181.114.128.0/19
inetnum: 201.220.176.0/20
inetnum: 201.220.160.0/20
nic-hdl: ANM7
person: COTESMA SMA
e-mail: marcos.pytel@cotesma.com.ar
address: Cap. Drury, 761, -
address: 8370 - San Martin de los Andes - NQ
country: AR
phone: +54 2972427000 [2200]
created: 20050908
changed: 20230622
% whois.lacnic.net accepts only direct match queries.
% Types of queries are: POCs, ownerid, CIDR blocks, IP
% and AS numbers.