Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Active-threat / abuse risk −12
- Enterprise allocation +4
- Trust score 57 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 69 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS18881 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 200.162.44.0/24 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.159.64.0/18 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.148.128.0/18 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.159.0.0/18 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 201.91.0.0/16 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.162.5.0/24 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.153.0.0/17 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 189.44.0.0/17 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.148.128.0/17 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.162.54.0/24 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 189.108.0.0/16 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 200.205.0.0/16 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 201.63.0.0/17 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 177.25.0.0/18 | AS10429, AS18881 | 2026-11-13 00:09:04 |
| 152.255.18.0/24 | AS10429, AS18881 | 2026-11-13 00:09:04 |
Showing the 15 most recently detected of 69 MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.
Network profile
Source: PeeringDB →Web3 footprint
AS18881 hosts 3 observed decentralized-network nodes across 2 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS18881 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 186.212.227.0/24 | 480,993 | 2026-11-08 19:43:12 |
| 179.184.152.0/22 | 467,779 | 2026-11-12 23:59:49 |
| 179.187.8.0/21 | 282,989 | 2026-11-12 23:59:50 |
| 187.115.132.0/22 | 265,469 | 2026-11-12 23:59:50 |
| 189.27.48.0/20 | 214,553 | 2026-11-10 18:05:18 |
| 179.184.44.0/22 | 210,405 | 2026-11-12 23:59:49 |
| 179.184.148.0/22 | 187,514 | 2026-11-12 23:59:49 |
| 177.207.176.0/22 | 187,347 | 2026-11-12 23:59:49 |
| 179.183.72.0/21 | 169,568 | 2026-11-12 23:59:50 |
| 177.135.160.0/20 | 90,206 | 2026-11-12 23:59:49 |
| 177.97.128.0/19 | 72,705 | 2026-11-12 23:59:50 |
| 177.134.0.0/19 | 72,605 | 2026-11-12 23:59:50 |
| 187.115.128.0/20 | 72,497 | 2026-11-12 23:59:50 |
| 179.180.240.0/20 | 70,645 | 2026-11-12 23:59:50 |
| 179.186.112.0/21 | 70,157 | 2026-11-12 23:59:50 |
| 187.114.64.0/19 | 69,613 | 2026-11-12 23:59:50 |
| 177.156.192.0/19 | 55,664 | 2026-11-12 23:59:50 |
| 177.17.224.0/21 | 54,766 | 2026-11-06 18:19:42 |
| 191.32.112.0/20 | 52,479 | 2026-11-12 23:59:49 |
| 179.185.32.0/22 | 52,054 | 2026-11-12 23:59:50 |
| 179.184.168.0/22 | 50,153 | 2026-11-12 23:59:49 |
| 177.17.216.0/21 | 44,007 | 2026-10-16 13:18:16 |
| 179.183.64.0/21 | 42,882 | 2026-11-12 23:59:50 |
| 177.204.112.0/20 | 39,006 | 2026-11-12 23:59:49 |
| 177.156.112.0/20 | 34,909 | 2026-11-12 23:59:50 |
| 186.214.240.0/20 | 33,298 | 2026-11-12 23:59:49 |
| 177.157.192.0/19 | 31,620 | 2026-11-12 23:59:49 |
| 189.59.16.0/22 | 30,624 | 2026-11-12 23:59:49 |
| 177.99.240.0/21 | 30,307 | 2026-11-12 23:59:49 |
| 177.159.120.0/21 | 29,756 | 2026-11-12 23:59:49 |
| 177.18.120.0/21 | 29,444 | 2026-11-12 23:59:50 |
| 177.17.64.0/20 | 28,571 | 2026-11-12 23:59:49 |
| 189.114.160.0/19 | 28,332 | 2026-11-12 23:59:50 |
| 177.133.192.0/19 | 27,508 | 2026-11-12 23:59:50 |
| 177.205.176.0/21 | 27,264 | 2026-11-12 23:59:50 |
| 179.183.144.0/20 | 26,700 | 2026-11-12 23:59:49 |
| 177.207.144.0/21 | 26,268 | 2026-11-12 23:59:49 |
| 177.157.128.0/19 | 25,682 | 2026-11-12 23:59:50 |
| 200.146.0.0/24 | 25,009 | 2026-11-12 23:59:50 |
| 179.183.0.0/20 | 24,941 | 2026-11-12 23:59:50 |
| 177.16.192.0/19 | 24,428 | 2026-11-12 23:59:49 |
| 177.207.88.0/21 | 24,230 | 2026-11-12 23:59:49 |
| 177.158.64.0/21 | 24,105 | 2026-11-12 23:59:49 |
| 177.157.16.0/21 | 24,019 | 2026-11-12 23:59:49 |
| 200.139.112.0/20 | 23,227 | 2026-11-12 23:59:50 |
| 177.19.248.0/21 | 22,951 | 2026-11-12 23:59:50 |
| 177.16.224.0/20 | 22,651 | 2026-11-12 23:59:49 |
| 179.184.84.0/22 | 22,488 | 2026-11-12 23:59:49 |
| 177.41.176.0/20 | 22,309 | 2026-11-12 23:59:49 |
| 177.159.232.0/23 | 21,994 | 2026-11-12 23:59:49 |
Showing top 50 of 1,087 announced prefixes by sample volume.
Frequently Asked Questions
What is AS18881?
AS18881 is an Autonomous System Number assigned to TELEFONICA BRASIL S.A. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS18881 announce?
AS18881 announces 4.58M IPv4 addresses distributed across 66 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS18881?
AS18881 is operated by TELEFONICA BRASIL S.A. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS18881 registered in?
AS18881 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
