AS18881 Telefônica Brasil S.A.

AS18881Telefônica Brasil S.A.ISP

WHOIS Topology

Telefônica Brasil S.aBrazil · LACNICtelefonica.com.br

Home broadbandTor relays

IPv4 addresses

4,616,192

954 announced prefixes

IPv6 addresses

7.99 × 10²⁹

72 announced prefixes

BGP neighbours

…

CAIDA rank

#7,895

Customer cone 2 ASNs

Estimated users

4.16M

APNIC: 4.17M

RPKI

0% valid

0 invalid · 1,026 not covered

Average purity

91 sampled IPs

IXPs / facilities

0 / 0

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

Loading routing history…

IP ranges

Currently announced prefixes with their RIR registration and geolocation.

Prefix	RPKI	Registration	Geolocation	Addresses
177.16.0.0/14	Not found	—	Curitiba	262,144
177.40.0.0/14	Not found	—	Santo André	262,144
177.96.0.0/14	Not found	—	Formiga	262,144
177.132.0.0/14	Not found	—	São Paulo	262,144
177.156.0.0/14	Not found	—	Guarapari	262,144
177.204.0.0/14	Not found	—	São Paulo	262,144
179.176.0.0/14	Not found	—	Maceió	262,144
179.180.0.0/14	Not found	—	Patos	262,144
179.184.0.0/14	Not found	—	Curitiba	262,144
186.212.0.0/14	Not found	—	Londrina	262,144
187.112.0.0/14	Not found	—	Curitiba	262,144
191.32.0.0/14	Not found	—	Porto Alegre	262,144
191.248.0.0/14	Not found	—	Vitória	262,144
187.58.0.0/15	Not found	—	São Paulo	131,072
189.26.0.0/15	Not found	—	Curitiba	131,072
189.58.0.0/15	Not found	—	Sete Lagoas	131,072
189.114.0.0/15	Not found	—	São Paulo	131,072
179.95.0.0/16	Not found	—	Brasília	65,536
187.112.0.0/16	Not found	—	Curitiba	65,536
191.30.0.0/16	Not found	—	São José	65,536

Only the first 500 prefixes are listed; address counts and geography use all prefixes.

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 251 / 18,032 （1%） · flagged 210

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

179.184.0.0/1426/1024 with data · 23 flagged

177.156.0.0/1421/1024 with data · 16 flagged

179.176.0.0/1419/1024 with data · 18 flagged

191.32.0.0/1417/1024 with data · 15 flagged

177.204.0.0/1416/1024 with data · 15 flagged

177.96.0.0/1414/1024 with data · 10 flagged

186.212.0.0/1414/1024 with data · 11 flagged

177.16.0.0/1413/1024 with data · 12 flagged

191.248.0.0/1413/1024 with data · 10 flagged

177.132.0.0/1411/1024 with data · 8 flagged

179.180.0.0/1411/1024 with data · 9 flagged

189.26.0.0/159/512 with data · 8 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 7070–84 1450–69 50–49 2

0.05%

Share of IPv4 reported or blocklisted

2,453

Listed IPs

Analysed IPs

Riskiest /24 blocks

/24 block	Flagged	Analysed
177.135.190.0/24	1	1
177.19.145.0/24	1	1
177.19.167.0/24	1	1
179.83.134.0/24	1	1

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

Brazil100.0%

Scope: Single country
In registered country: 100.0%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS18881 · Last 7 days

Mobile vs. Desktop

Desktop57.1%Mobile42.9%

Bot vs. Human

Human85.0%Bot15.0%

Adoption & Usage

Adoption and usage of key protocols

Internet Protocol (IP) Version

IPv415.1%IPv684.9%

HTTP Version

HTTP/1.x

15.2%HTTP/2

53.0%HTTP/3

31.9%

HTTP vs. HTTPS

97.8% HTTPS (encrypted)

Plain HTTP 2.2%

TLS Version

TLS 1.0/1.1< 0.1%TLS 1.24.7%TLS 1.362.7%QUIC32.6%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks

GET

87.0%POST

9.3%HEAD

2.1%OPTIONS

1.4%PATCH

0.2%Other

< 0.1%

BGP Announcements

Hourly BGP route announcements over the last 7 days

4,400,264

7-day total

205,321

Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

A pronounced day/night rhythm, typical of networks with human users.

	00						06						12						18
Mon
Tue
Wed
Thu
Fri
Sat
Sun

Times in UTCLessMore

Peak hour: 18:00–19:00
Active hours: 17 hrs
Weekend vs weekday: Weekdays heavier
Busiest day: Tue

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BGP upstreams and neighbours

AS18881Standalone page

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WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

Information	Source	Updated
Registered country	RIR daily delegation statistics	2026-10-20
Registered address & allocation date	RIR registration data (RDAP)	2026-10-07
Organization & company country	AS-to-organization data	2026-10-21
Network type	CleanIP ASN canon	2026-10-17
Announced prefixes & BGP neighbours	Public BGP routing data	2026-10-22
IPv4 geography	Geolocation database	—
RPKI validation	RPKI ROA validation data	2026-10-22
Rank & customer cone	CAIDA AS Rank	2026-10-01
Estimated users (APNIC)	APNIC Labs user estimates	2026-10-19
Network tags	Public routing data community tags	2026-10-21
IP reputation	CleanIP lookups and neighbour sampling	—

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Multi-source cross-checks · In-house reputation data · Real data only