AS21574
ASN21574
Century Telecom Ltda
Registry
Authoritative registration data
- AS number
- 21574
- Name
- ASN21574
- Organisation
- Century Telecom Ltda
- Country
-
BR
Brazil
- RIR
- —
- Registered
IPv4 prefixes
6
IPv6 prefixes
1
Total announced
7
Announced prefixes
Observed in BGP by route collectors, not a registry allocation list
| 186.249.224.0/20 | IPv4 | /20 | not checked | |
| 187.1.176.0/20 | IPv4 | /20 | not checked | |
| 200.169.0.0/20 | IPv4 | /20 | RPKI not found | |
| 168.227.200.0/22 | IPv4 | /22 | not checked | |
| 187.1.176.0/24 | IPv4 | /24 | not checked | |
| 187.1.178.0/24 | IPv4 | /24 | not checked | |
| 2804:23ec::/32 | IPv6 | /32 | RPKI not found |
No rows match “”.
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Internet Exchanges
Exchanges where this network has a listed peering LAN connection
| Address families | ||
|---|---|---|
| DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN | 7,000 Mbps | IPv4 · IPv6 |
| DE-CIX New York: DE-CIX New York Peering LAN | 3,000 Mbps | IPv4 · IPv6 |
| DE-CIX Sao Paulo | 100,000 Mbps | IPv4 · IPv6 |
| Equinix São Paulo: Equinix IX - SP Metro | 10,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) Belo Horizonte: ATM/MPLA | 200,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) Campinas: ATM/MPLA | 10,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) Curitiba: ATM/MPLA | 10,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) Florianópolis: ATM/MPLA | 10,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) Fortaleza: ATM/MPLA | 5,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) Porto Alegre: ATM/MPLA | 10,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) Rio de Janeiro: ATM/MPLA | 300,000 Mbps | IPv4 · IPv6 |
| IX.br (PTT.br) São Paulo: ATM/MPLA | 400,000 Mbps | IPv4 · IPv6 |
No rows match “”.
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Exchange membership means the network has a listed connection; it does not prove peering with other members.
Observed adjacencies
Networks seen next to AS21574 in BGP paths by route collectors.
Observed upstreams
28 networks seen before AS21574 in AS paths
| Families | |||
|---|---|---|---|
| AS7195 7195 | 20,439 | 84,511 |
v4
v6
|
| AS263444 ASN263444 | 14,395 | 49,503 |
v4
v6
|
| AS1031 PEER1-1031 | 3,269 | 10,384 |
v4
|
| AS267613 ASN267613 | 2,352 | 8,435 |
v4
v6
|
| AS6939 HURRICANE | 2,394 | 6,919 |
v4
v6
|
| AS3356 LEVEL3 | 1,775 | 4,974 |
v4
v6
|
| AS25091 IP-Max | 620 | 3,726 |
v4
v6
|
| AS3303 SWISSCOM | 423 | 1,343 |
v4
|
| AS14840 ASN14840 | 74 | 1,053 |
v4
v6
|
| AS33891 CORE-BACKBONE | 244 | 736 |
v4
|
| AS24961 MYLOC-AS | 197 | 580 |
v4
|
| AS6057 6057 | 153 | 555 |
v4
v6
|
| AS16735 ASN16735 | 229 | 506 |
v4
v6
|
| AS60068 CDN77 | 88 | 497 |
v4
v6
|
| AS8455 ATOM86-AS | 137 | 453 |
v4
|
| AS174 COGENT-174 | 210 | 396 |
v4
v6
|
| AS35280 F5 | 108 | 394 |
v4
v6
|
| AS37468 ORG-AC4-AFRINIC | 98 | 352 |
v4
v6
|
| AS39120 CONVERGENZE-AS | 43 | 117 |
v4
v6
|
| AS137409 GSLNETWORKS-AS-AP | 18 | 37 |
v4
v6
|
| AS264455 ASN264455 | 8 | 28 |
v6
|
| AS272713 ASN272713 | 3 | 24 |
v4
|
| AS5405 INTERDOTLINK | 13 | 19 |
v4
|
| AS8758 IWAY | 4 | 18 |
v4
|
| AS22356 ASN22356 | 10 | 10 |
v4
|
| AS9498 BBIL-AP | 4 | 5 |
v4
|
| AS7713 telkomnet-as-ap | 1 | 3 |
v4
|
| AS61568 ASN61568 | 1 | 2 |
v4
|
No rows match “”.
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Observed downstreams
100 networks seen after AS21574 in AS paths
No rows match “”.
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Uncertain adjacencies
99 adjacencies that may be an artefact of collector peering
No rows match “”.
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