Home ASN LookupAS18881

AS18881 TELEFONICA BRASIL S.A

🇧🇷

Org handle: 124137

LACNICallocated

Announced Prefixes (BGP)

1,058total

985 IPv473 IPv6

IPv4 Addresses

Allocated (RIR)4.3M

Announced (BGP)8.9M

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)8.2×10²⁹

Prefix Limit (IPv4)

5,000

Prefix Limit (IPv6)

500

Country

🇧🇷 BR

RIR

LACNIC

Status

allocated

Allocated

2000-10-23

Listed on the threat map (2026-10-10)

#4 in Brazil (41 flagged networks located there)

Large hosting providers appear because attackers rent their servers, not necessarily because of the operator.

Announced Prefixes

(BGP)1,000 of 1,058

Prefix	RPKI	IRR	Last Seen
177.16.0.0/14	No ROA	Other IRR	2026-10-11
177.16.0.0/19	No ROA	-	2026-10-11
177.16.40.0/21	No ROA	-	2026-10-11
177.16.48.0/20	No ROA	-	2026-10-11
177.16.48.0/21	No ROA	-	2026-10-11
177.16.64.0/20	No ROA	-	2026-10-11
177.16.80.0/20	No ROA	-	2026-10-11
177.16.104.0/21	No ROA	-	2026-10-11
177.16.112.0/20	No ROA	-	2026-10-11
177.16.128.0/22	No ROA	-	2026-10-11

1-10 of 1,000

1 / 100

Allocated Prefixes

(RIR)28

Prefix	Country	RIR	Status
177.16.0.0/14	🇧🇷 BR	LACNIC	allocated
177.40.0.0/14	🇧🇷 BR	LACNIC	allocated
177.96.0.0/14	🇧🇷 BR	LACNIC	allocated
177.132.0.0/14	🇧🇷 BR	LACNIC	allocated
177.156.0.0/14	🇧🇷 BR	LACNIC	allocated
177.204.0.0/14	🇧🇷 BR	LACNIC	allocated
179.95.0.0/16	🇧🇷 BR	LACNIC	allocated
179.131.128.0/17	🇧🇷 BR	LACNIC	allocated
179.176.0.0/14	🇧🇷 BR	LACNIC	allocated
179.180.0.0/14	🇧🇷 BR	LACNIC	allocated

1-10 of 28

1 / 3

All 1,058 announced prefixes of AS18881 →

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS18881 hands its own prefixes to: transit providers, or peers at an exchange.

AS10429TELEFONICA BRASIL S.A1,058

Other adjacent networks (4)

Adjacent to AS18881 in the transit part of AS paths: peers, providers or customers.

AS61568ALOO TELECOM FSF TECNOLOGIA6
AS12956TELXIUS TELEFONICA GLOBAL SOLUTIONS SL3
AS52320GlobeNet Cabos Submarinos Colombia, S.A.S2
AS263625NEW WORLD PONTO COM INFORMATICA LTDA ME1

ASPA

No ASPA

External Links

LACNIC Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS18881 should publish an ASPA object
IPv4 transfers in the LACNIC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/18881

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/18881" | jq