AS18881 TELEFONICA BRASIL S.A

AS18881 - TELEFONICA BRASIL S.A · registered in Brazil

IPv4 addresses4,597,248532 prefixes · 0.147% of announced IPv4

Rank in Brazil#6largest network in BR by IPv4 space, of 7,969 · 6.12% of BR

Rank worldwide#105of 79,396 networks with IPv4

IPv610 x /32 (661,054 x /48)95 prefixes

CountryBrazil8,771 ASNs registered there

Open AS18881 in ASN lookup Look up an IP in this network (177.16.0.1) All networks in Brazil

IPv4 prefixes

First 500 of 532 prefixes, in address order.

177.16.0.0/19
177.16.32.0/20
177.16.48.0/21
177.16.56.0/21
177.16.64.0/18
177.16.128.0/18
177.16.192.0/21
177.16.200.0/21
177.16.208.0/20
177.16.224.0/20
177.16.240.0/20
177.17.0.0/18
177.17.64.0/19
177.17.96.0/19
177.17.128.0/19
177.17.160.0/21
177.17.168.0/21
177.17.176.0/20
177.17.192.0/18
177.18.0.0/20
177.18.16.0/20
177.18.32.0/20
177.18.48.0/21
177.18.56.0/22
177.18.60.0/22
177.18.64.0/20
177.18.80.0/20
177.18.96.0/19
177.18.128.0/17
177.19.0.0/19
177.19.32.0/20
177.19.48.0/20
177.19.64.0/20
177.19.80.0/20
177.19.96.0/19
177.19.128.0/18
177.19.192.0/19
177.19.224.0/19
177.40.0.0/20
177.40.16.0/21
177.40.24.0/21
177.40.32.0/19
177.40.64.0/20
177.40.80.0/20
177.40.96.0/19
177.40.128.0/20
177.40.144.0/20
177.40.160.0/19
177.40.192.0/19
177.40.224.0/21
177.40.232.0/21
177.40.240.0/20
177.41.0.0/18
177.41.64.0/20
177.41.80.0/20
177.41.96.0/19
177.41.128.0/20
177.41.144.0/21
177.41.152.0/21
177.41.160.0/19
177.41.192.0/20
177.41.208.0/21
177.41.216.0/21
177.41.224.0/20
177.41.240.0/21
177.41.248.0/21
177.42.0.0/18
177.42.64.0/19
177.42.96.0/20
177.42.112.0/20
177.42.128.0/18
177.42.192.0/19
177.42.224.0/20
177.42.240.0/20
177.43.0.0/17
177.43.128.0/19
177.43.160.0/23
177.43.162.0/24
177.43.163.0/24
177.43.164.0/22
177.43.168.0/21
177.43.176.0/20
177.43.192.0/18
177.96.0.0/17
177.96.128.0/20
177.96.144.0/20
177.96.160.0/19
177.96.192.0/18
177.97.0.0/17
177.97.128.0/18
177.97.192.0/20
177.97.216.0/21
177.97.224.0/19
177.98.0.0/17
177.98.128.0/18
177.98.192.0/19
177.98.224.0/22
177.98.230.0/23
177.98.232.0/21
177.98.240.0/20
177.99.0.0/18
177.99.64.0/20
177.99.80.0/20
177.99.96.0/19
177.99.128.0/18
177.99.192.0/21
177.99.200.0/21
177.99.208.0/20
177.99.224.0/20
177.99.240.0/21
177.99.248.0/21
177.132.0.0/18
177.132.64.0/18
177.132.128.0/20
177.132.144.0/21
177.132.152.0/21
177.132.160.0/19
177.132.192.0/19
177.132.224.0/21
177.132.232.0/21
177.132.240.0/20
177.133.0.0/17
177.133.128.0/18
177.133.192.0/21
177.133.200.0/21
177.133.208.0/20
177.133.224.0/19
177.134.0.0/16
177.135.0.0/18
177.135.64.0/20
177.135.80.0/20
177.135.96.0/19
177.135.128.0/17
177.145.0.0/18
177.156.0.0/17
177.156.128.0/21
177.156.136.0/21
177.156.144.0/20
177.156.160.0/19
177.156.192.0/21
177.156.200.0/21
177.156.208.0/20
177.156.224.0/19
177.157.0.0/19
177.157.32.0/20
177.157.48.0/20
177.157.64.0/18
177.157.128.0/17
177.158.0.0/20
177.158.16.0/20
177.158.32.0/19
177.158.64.0/21
177.158.72.0/21
177.158.80.0/20
177.158.96.0/19
177.158.128.0/17
177.159.0.0/16
177.204.0.0/17
177.204.128.0/20
177.204.144.0/21
177.204.152.0/22
177.204.156.0/22
177.204.160.0/20
177.204.176.0/20
177.204.192.0/20
177.204.208.0/20
177.204.224.0/19
177.205.0.0/16
177.206.0.0/16
177.207.0.0/18
177.207.64.0/20
177.207.80.0/22
177.207.84.0/22
177.207.88.0/21
177.207.96.0/19
177.207.128.0/21
177.207.136.0/21
177.207.144.0/21
177.207.152.0/21
177.207.160.0/19
177.207.192.0/18
179.83.0.0/18
179.83.64.0/19
179.83.96.0/20
179.83.112.0/22
179.83.116.0/22
179.83.120.0/21
179.83.128.0/17
179.95.0.0/18
179.95.64.0/20
179.95.80.0/21
179.95.88.0/21
179.95.96.0/19
179.95.128.0/17
179.131.192.0/18
179.162.0.0/17
179.162.128.0/18
179.162.192.0/19
179.162.240.0/20
179.176.0.0/18
179.176.64.0/21
179.176.72.0/21
179.176.80.0/20
179.176.96.0/19
179.176.128.0/17
179.177.0.0/21
179.177.8.0/21
179.177.16.0/20
179.177.32.0/19
179.177.64.0/19
179.177.96.0/22
179.177.100.0/22
179.177.104.0/21
179.177.112.0/20
179.177.128.0/17
179.178.0.0/18
179.178.64.0/19
179.178.96.0/20
179.178.112.0/21
179.178.120.0/21
179.178.128.0/20
179.178.144.0/20
179.178.160.0/19
179.178.192.0/20
179.178.208.0/20
179.178.224.0/19
179.179.0.0/17
179.179.128.0/19
179.179.160.0/19
179.179.192.0/19
179.179.224.0/20
179.179.240.0/20
179.180.0.0/18
179.180.64.0/19
179.180.96.0/19
179.180.128.0/19
179.180.160.0/20
179.180.176.0/20
179.180.192.0/18
179.181.0.0/20
179.181.16.0/21
179.181.24.0/21
179.181.32.0/19
179.181.64.0/19
179.181.96.0/20
179.181.112.0/20
179.181.128.0/19
179.181.160.0/19
179.181.192.0/18
179.182.0.0/17
179.182.128.0/18
179.182.192.0/19
179.182.224.0/20
179.182.240.0/20
179.183.0.0/18
179.183.64.0/19
179.183.96.0/19
179.183.128.0/17
179.184.0.0/17
179.184.128.0/19
179.184.160.0/20
179.184.176.0/22
179.184.180.0/22
179.184.184.0/21
179.184.192.0/18
179.185.0.0/17
179.185.128.0/21
179.185.136.0/21
179.185.144.0/20
179.185.160.0/21
179.185.168.0/21
179.185.176.0/20
179.185.192.0/20
179.185.208.0/20
179.185.224.0/19
179.186.0.0/17
179.186.128.0/18
179.186.192.0/18
179.187.0.0/18
179.187.64.0/19
179.187.96.0/19
179.187.128.0/17
186.212.0.0/20
186.212.16.0/21
186.212.24.0/21
186.212.32.0/19
186.212.64.0/18
186.212.128.0/19
186.212.160.0/20
186.212.176.0/20
186.212.192.0/18
186.213.0.0/17
186.213.128.0/20
186.213.144.0/21
186.213.152.0/21
186.213.160.0/19
186.213.192.0/19
186.213.224.0/24
186.213.225.0/24
186.213.226.0/23
186.213.228.0/22
186.213.232.0/21
186.213.240.0/20
186.214.0.0/21
186.214.8.0/22
186.214.12.0/22
186.214.16.0/20
186.214.32.0/19
186.214.64.0/18
186.214.128.0/20
186.214.144.0/21
186.214.152.0/21
186.214.160.0/21
186.214.168.0/21
186.214.176.0/20
186.214.192.0/18
186.215.0.0/17
186.215.128.0/18
186.215.192.0/20
186.215.208.0/24
186.215.209.0/24
186.215.210.0/23
186.215.212.0/22
186.215.216.0/21
186.215.224.0/21
186.215.232.0/22
186.215.236.0/22
186.215.240.0/20
187.58.0.0/19
187.58.32.0/20
187.58.48.0/21
187.58.56.0/21
187.58.64.0/18
187.58.128.0/22
187.58.132.0/22
187.58.136.0/21
187.58.144.0/20
187.58.160.0/19
187.58.192.0/20
187.58.208.0/20
187.58.224.0/19
187.59.0.0/19
187.59.32.0/19
187.59.64.0/20
187.59.80.0/21
187.59.88.0/21
187.59.96.0/19
187.59.128.0/17
187.112.0.0/19
187.112.32.0/20
187.112.48.0/21
187.112.56.0/21
187.112.64.0/19
187.112.96.0/19
187.112.128.0/19
187.112.160.0/20
187.112.176.0/20
187.112.192.0/19
187.112.224.0/21
187.112.232.0/22
187.112.236.0/23
187.112.238.0/23
187.112.240.0/20
187.113.0.0/20
187.113.16.0/21
187.113.24.0/21
187.113.32.0/19
187.113.64.0/18
187.113.128.0/19
187.113.160.0/19
187.113.192.0/18
187.114.0.0/21
187.114.8.0/21
187.114.16.0/20
187.114.32.0/19
187.114.64.0/18
187.114.128.0/17
187.115.0.0/20
187.115.16.0/22
187.115.20.0/23
187.115.22.0/23
187.115.24.0/21
187.115.32.0/19
187.115.64.0/19
187.115.96.0/21
187.115.104.0/21
187.115.112.0/20
187.115.128.0/21
187.115.136.0/21
187.115.144.0/20
187.115.160.0/22
187.115.164.0/23
187.115.166.0/23
187.115.168.0/21
187.115.176.0/20
187.115.192.0/19
187.115.224.0/20
187.115.240.0/20
189.26.0.0/17
189.26.128.0/20
189.26.144.0/20
189.26.160.0/19
189.26.192.0/19
189.26.224.0/20
189.26.240.0/20
189.27.0.0/18
189.27.64.0/19
189.27.96.0/20
189.27.112.0/20
189.27.128.0/17
189.58.0.0/16
189.59.0.0/21
189.59.8.0/21
189.59.16.0/22
189.59.20.0/22
189.59.24.0/21
189.59.32.0/19
189.59.64.0/18
189.59.128.0/18
189.59.192.0/20
189.59.208.0/21
189.59.216.0/22
189.59.220.0/22
189.59.224.0/20
189.59.240.0/20
189.114.0.0/19
189.114.32.0/20
189.114.48.0/21
189.114.56.0/22
189.114.60.0/23
189.114.62.0/23
189.114.64.0/18
189.114.128.0/17
189.115.0.0/17
189.115.128.0/19
189.115.160.0/20
189.115.176.0/21
189.115.184.0/21
189.115.192.0/20
189.115.208.0/20
189.115.224.0/20
189.115.240.0/20
191.30.0.0/19
191.30.32.0/20
191.30.48.0/20
191.30.64.0/21
191.30.72.0/22
191.30.76.0/22
191.30.80.0/20
191.30.96.0/19
191.30.128.0/20
191.30.144.0/20
191.30.160.0/19
191.30.192.0/18
191.31.0.0/20
191.31.16.0/20
191.31.32.0/19
191.31.64.0/19
191.31.96.0/19
191.31.128.0/17
191.32.0.0/18
191.32.64.0/19
191.32.96.0/21
191.32.104.0/22
191.32.108.0/22
191.32.112.0/20
191.32.128.0/18
191.32.192.0/19
191.32.224.0/20
191.32.240.0/20
191.33.0.0/18
191.33.64.0/19
191.33.96.0/20
191.33.112.0/20
191.33.128.0/17
191.34.0.0/18
191.34.64.0/19
191.34.96.0/19
191.34.128.0/17
191.35.0.0/20
191.35.16.0/20
191.35.32.0/19
191.35.64.0/18
191.35.128.0/17
191.248.0.0/17
191.248.128.0/19
191.248.160.0/19
191.248.192.0/18
191.249.0.0/16
191.250.0.0/18
191.250.64.0/20
191.250.80.0/20
191.250.96.0/19
191.250.128.0/17
191.251.0.0/17
191.251.128.0/18
191.251.192.0/19
191.251.224.0/20
191.251.240.0/20
200.139.64.0/19

IPv6 prefixes

All 95 prefixes.

2804:1b0::/36
2804:1b0:1000::/37
2804:1b0:1800::/39
2804:1b0:1a00::/41
2804:1b0:1a80::/46
2804:1b0:1a84::/46
2804:1b0:1a88::/45
2804:1b0:1a90::/44
2804:1b0:1aa0::/43
2804:1b0:1ac0::/42
2804:1b0:1b00::/40
2804:1b0:1c00::/38
2804:1b0:e000::/35
2804:1b1::/33
2804:1b1:8000::/34
2804:1b1:c000::/35
2804:1b1:e000::/37
2804:1b1:f800::/37
2804:1b2::/34
2804:1b2:4000::/42
2804:1b2:4040::/47
2804:1b2:4042::/47
2804:1b2:4044::/46
2804:1b2:4048::/45
2804:1b2:4050::/44
2804:1b2:4060::/43
2804:1b2:4080::/41
2804:1b2:4100::/40
2804:1b2:4200::/39
2804:1b2:4400::/38
2804:1b2:4800::/37
2804:1b2:6000::/35
2804:1b2:8000::/34
2804:1b2:c100::/40
2804:1b2:d000::/40
2804:1b2:d100::/46
2804:1b2:d104::/46
2804:1b2:d108::/45
2804:1b2:d110::/44
2804:1b2:d120::/43
2804:1b2:d140::/42
2804:1b2:d180::/41
2804:1b2:d200::/39
2804:1b2:f000::/40
2804:1b2:f100::/41
2804:1b2:f200::/39
2804:1b2:f400::/38
2804:1b2:f800::/37
2804:1b3:1000::/36
2804:1b3:3000::/39
2804:1b3:4000::/40
2804:1b3:4100::/41
2804:1b3:4180::/41
2804:1b3:4200::/39
2804:1b3:4400::/38
2804:1b3:4800::/37
2804:1b3:6000::/35
2804:1b3:8000::/41
2804:1b3:8080::/41
2804:1b3:8100::/40
2804:1b3:8200::/40
2804:1b3:8300::/41
2804:1b3:8380::/46
2804:1b3:8384::/46
2804:1b3:8388::/45
2804:1b3:8390::/44
2804:1b3:83a0::/43
2804:1b3:83c0::/42
2804:1b3:8400::/38
2804:1b3:8800::/37
2804:1b3:9000::/37
2804:1b3:9800::/37
2804:1b3:a000::/37
2804:1b3:a800::/37
2804:1b3:b000::/36
2804:1b3:c000::/37
2804:1b3:c800::/39
2804:1b3:ca42::/47
2804:1b3:ca44::/46
2804:1b3:ca48::/45
2804:1b3:ca50::/44
2804:1b3:ca60::/43
2804:1b3:ca80::/41
2804:1b3:cb00::/40
2804:1b3:cc00::/38
2804:1b3:d000::/36
2804:7f0::/31
2804:7f2::/32
2804:7f3::/33
2804:7f3:8000::/35
2804:7f3:e000::/35
2804:7f4::/31
2804:7f6::/34
2804:7f6:8000::/33
2804:7f7::/32

Other ASNs named TELEFONICA BRASIL S.A

7 other networks use the same organisation name; together with AS18881 they announce 22,025,216 IPv4 addresses.

ASNNameIPv4 addresses

AS26599AS26599 - TELEFONICA BRASIL S.A BR10,786,304

AS27699AS27699 - TELEFONICA BRASIL S.A BR4,643,840

AS10429AS10429 - TELEFONICA BRASIL S.A BR1,644,288

AS19182AS19182 - TELEFONICA BRASIL S.A BR245,760

AS11706AS11706 - TELEFONICA BRASIL S.A BR71,424

AS11419AS11419 - TELEFONICA BRASIL S.A BR36,352

AS272264AS272264 - TELEFONICA BRASIL S.A BRIPv6 only

Similar-sized networks in Brazil

ASNNameIPv4 addresses

AS26615#3 AS26615 - TIM S/A8,865,024

AS4230#4 AS4230 - CLARO S.A.5,155,584

AS27699#5 AS27699 - TELEFONICA BRASIL S.A4,643,840

AS8167#7 AS8167 - V tal2,245,632

AS10429#8 AS10429 - TELEFONICA BRASIL S.A1,644,288

AS22085#9 AS22085 - Claro S/A1,586,176

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources