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AS18881

AS18881 is Vivo (Telefônica Brasil)’s network.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (3 Nov 2026)

Short answer

AS18881 belongs to TELEFÔNICA BRASIL S.A. DB-IP Lite attributes 4,581,376 IPv4 addresses in 32 ranges and 45 IPv6 ranges to it, all or nearly all of the IPv4 space in Brazil. The number is registered with LACNIC in Brazil on 23 Oct 2000.

Facts for AS18881
Operator (DB-IP)TELEFÔNICA BRASIL S.A
KindHome broadband (curated)
IPv4 addresses4,581,376
IPv4 ranges32
IPv6 ranges45
RegistryLACNIC
Registered23 Oct 2000
Registry countryBrazil (BR)

Does it publish a geofeed?

Not for the range we sampled (179.176.0.0 – 179.187.255.255): its registry record, and the record above it, link no RFC 8805 geofeed (checked 2 Nov 2026). Without one, location databases have to estimate where these addresses are used, which is a common reason customers of Vivo (Telefônica Brasil) see the wrong city. Customers can ask Vivo (Telefônica Brasil) to publish one; the evidence report drafts that request.

Shared addresses (CGNAT)

Vivo (Telefônica Brasil) hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 45 IPv6 ranges for AS18881, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

BR100%
GB0.02%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
177.16.0.0 – 177.19.255.255177.16.0.0/14262,144
177.40.0.0 – 177.43.255.255177.40.0.0/14262,144
177.96.0.0 – 177.99.255.255177.96.0.0/14262,144
177.132.0.0 – 177.135.255.255177.132.0.0/14262,144
177.145.0.0 – 177.145.63.255177.145.0.0/1816,384
177.156.0.0 – 177.159.255.255177.156.0.0/14262,144
177.204.0.0 – 177.207.255.255177.204.0.0/14262,144
179.83.0.0 – 179.83.255.255179.83.0.0/1665,536
179.95.0.0 – 179.95.255.255179.95.0.0/1665,536
179.131.192.0 – 179.131.255.255179.131.192.0/1816,384
179.162.0.0 – 179.162.223.255179.162.0.0/17, 179.162.128.0/18 …57,344
179.162.240.0 – 179.162.255.255179.162.240.0/204,096
179.176.0.0 – 179.187.255.255179.176.0.0/13, 179.184.0.0/14786,432
186.212.0.0 – 186.215.255.255186.212.0.0/14262,144
187.58.0.0 – 187.59.255.255187.58.0.0/15131,072
187.112.0.0 – 187.113.159.255187.112.0.0/16, 187.113.0.0/17 …106,496
187.113.176.0 – 187.114.143.255187.113.176.0/20, 187.113.192.0/18 …57,344
187.114.152.0 – 187.115.255.255187.114.152.0/21, 187.114.160.0/19 …92,160
189.26.0.0 – 189.27.255.255189.26.0.0/15131,072
189.58.0.0 – 189.59.255.255189.58.0.0/15131,072
189.114.0.0 – 189.115.255.255189.114.0.0/15131,072
191.30.0.0 – 191.30.207.255191.30.0.0/17, 191.30.128.0/18 …53,248
191.30.224.0 – 191.31.31.255191.30.224.0/19, 191.31.0.0/1916,384
191.31.48.0 – 191.35.191.255191.31.48.0/20, 191.31.64.0/18 …299,008
191.35.208.0 – 191.35.255.255191.35.208.0/20, 191.35.224.0/1912,288
191.248.0.0 – 191.251.255.255191.248.0.0/14262,144
200.139.64.0 – 200.139.127.255200.139.64.0/1816,384
200.146.0.0 – 200.146.127.255200.146.0.0/1732,768
200.175.0.0 – 200.175.255.255200.175.0.0/1665,536
201.22.0.0 – 201.22.255.255201.22.0.0/1665,536
201.47.0.0 – 201.47.255.255201.47.0.0/1665,536
201.86.0.0 – 201.86.255.255201.86.0.0/1665,536
2804:1b0:: – 2804:1b0:1f43:ffff:ffff:ffff:ffff:ffff2804:1b0::/36IPv6
2804:1b0:e100:: – 2804:1b0:f443:ffff:ffff:ffff:ffff:ffff2804:1b0:e100::/40IPv6
2804:1b1:100:: – 2804:1b1:6303:ffff:ffff:ffff:ffff:ffff2804:1b1:100::/40IPv6
2804:1b1:8001:: – 2804:1b1:bf03:ffff:ffff:ffff:ffff:ffff2804:1b1:8001::/48IPv6
2804:1b1:c10e:: – 2804:1b1:e702:ffff:ffff:ffff:ffff:ffff2804:1b1:c10e::/47IPv6
2804:1b1:f800:: – 2804:1b2:184b:ffff:ffff:ffff:ffff:ffff2804:1b1:f800::/37IPv6
2804:1b2:2042:: – 2804:1b2:26c2:ffff:ffff:ffff:ffff:ffff2804:1b2:2042::/47IPv6
2804:1b2:4001:: – 2804:1b2:4003:ffff:ffff:ffff:ffff:ffff2804:1b2:4001::/48IPv6
2804:1b2:6000:: – 2804:1b2:6e01:ffff:ffff:ffff:ffff:ffff2804:1b2:6000::/37IPv6
2804:1b2:9000:: – 2804:1b2:9583:ffff:ffff:ffff:ffff:ffff2804:1b2:9000::/38IPv6
2804:1b2:aa40:: – 2804:1b2:ab43:ffff:ffff:ffff:ffff:ffff2804:1b2:aa40::/42IPv6
2804:1b2:b880:: – 2804:1b2:b883:ffff:ffff:ffff:ffff:ffff2804:1b2:b880::/46IPv6
2804:1b2:d000:: – 2804:1b2:d143:ffff:ffff:ffff:ffff:ffff2804:1b2:d000::/40IPv6
2804:1b2:f140:: – 2804:1b2:f17f:ffff:ffff:ffff:ffff:ffff2804:1b2:f140::/42IPv6
2804:1b3:1080:: – 2804:1b3:1143:ffff:ffff:ffff:ffff:ffff2804:1b3:1080::/41IPv6
2804:1b3:3000:: – 2804:1b3:3083:ffff:ffff:ffff:ffff:ffff2804:1b3:3000::/41IPv6
2804:1b3:4100:: – 2804:1b3:4143:ffff:ffff:ffff:ffff:ffff2804:1b3:4100::/42IPv6
2804:1b3:6000:: – 2804:1b3:7143:ffff:ffff:ffff:ffff:ffff2804:1b3:6000::/36IPv6
2804:1b3:8001:: – 2804:1b3:d041:ffff:ffff:ffff:ffff:ffff2804:1b3:8001::/48IPv6
2804:7f0:: – 2804:7f0:16c1:f:ffff:ffff:ffff:ffff2804:7f0::/36IPv6
Showing 32 of 32 IPv4 and 20 of 45 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 4 Nov 2026