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Autonomous System

AS28270

AS28270

Announced IPs
69,120
CIDR prefixes
39
ASN
AS28270

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.

53/100
Caution
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 16 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS28270 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.

PrefixOrigin ASNsLast detected (UTC)
187.110.208.0/20 AS28270, AS271724 2026-07-23 18:23:41
179.191.128.0/20 AS28270, AS271724 2026-07-23 18:23:41
170.0.204.0/22 AS28270, AS271724 2026-07-23 18:23:41
131.221.68.0/22 AS28270, AS271724 2026-07-23 18:23:41
177.75.208.0/20 AS28270, AS271724 2026-07-23 18:23:41
189.50.144.0/20 AS28270, AS271724 2026-07-22 23:23:24
170.245.100.0/22 AS28270, AS271724 2026-07-22 23:23:24
179.191.144.0/20 AS28270, AS271724 2026-07-22 23:23:24
138.122.237.0/24 AS28220, AS28270 2026-07-22 08:53:19
187.108.96.0/20 AS28220, AS28270 2026-07-22 08:23:19
187.110.212.0/24 AS28270, AS271724 2026-07-22 01:23:16
187.110.209.0/24 AS28270, AS271724 2026-07-22 01:23:16
187.110.211.0/24 AS28270, AS271724 2026-07-22 01:23:16
187.110.215.0/24 AS28270, AS271724 2026-07-22 01:23:16
187.110.214.0/24 AS28270, AS271724 2026-07-22 01:23:16

Showing the 15 most recently detected of 16 MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.

AS28270 — global IP footprint

Cities where AS28270 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
187.18.128.0/18 16.4K
0.0%
AS28270 BR Ceará Fortaleza
189.45.64.0/18 16.4K
92.7%
AS28270 BR Ceará Fortaleza
187.18.224.0/19 8.2K
0.0%
AS28270 BR Ceará Fortaleza
177.70.128.0/20 4.1K
0.0%
AS28270 BR
177.75.208.0/20 4.1K
84.0%
AS28270 BR Minas Gerais Pouso Alegre
187.18.128.0/20 4.1K
0.0%
AS28270 BR Ceará Fortaleza
187.18.176.0/20 4.1K
0.0%
AS28270 BR Ceará Fortaleza
187.18.192.0/20 4.1K
5.1%
AS28270 BR Ceará Fortaleza
177.66.64.0/21 2.0K
0.0%
AS28270 BR Minas Gerais Santa Rita do Sapucaí
177.87.144.0/21 2.0K
0.0%
AS28270 BR São Paulo São Sebastião da Grama
187.18.128.0/21 2.0K
0.0%
AS28270 BR
187.18.152.0/21 2.0K
0.0%
AS28270 BR Ceará Fortaleza
187.18.168.0/21 2.0K
0.0%
AS28270 BR
187.18.184.0/21 2.0K
0.0%
AS28270 BR
187.18.216.0/21 2.0K
0.0%
AS28270 BR
187.18.224.0/21 2.0K
0.0%
AS28270 BR Ceará Fortaleza
187.18.240.0/21 2.0K
0.0%
AS28270 BR
187.110.216.0/21 2.0K
0.0%
AS28270 BR São Paulo Limeira
189.45.72.0/21 2.0K
91.8%
AS28270 BR Ceará Fortaleza
189.45.80.0/21 2.0K
92.3%
AS28270 BR
160.238.220.0/22 1.0K
0.0%
AS28270 BR Minas Gerais São Thomé das Letras
168.228.128.0/22 1.0K
0.0%
AS28270 BR
168.232.116.0/22 1.0K
0.0%
AS28270 BR
187.18.140.0/22 1.0K
0.0%
AS28270 BR
187.18.180.0/22 1.0K
0.0%
AS28270 BR
187.18.248.0/22 1.0K
0.0%
AS28270 BR
187.110.212.0/22 1.0K
0.0%
AS28270 BR
189.45.68.0/22 1.0K
93.2%
AS28270 BR Ceará Fortaleza
189.45.100.0/22 1.0K
93.0%
AS28270 BR
200.94.240.0/22 1.0K
0.0%
AS28270 BR Minas Gerais Santa Rita do Sapucaí
201.149.120.0/22 1.0K
0.0%
AS28270 BR
138.122.236.0/23 512
0.0%
AS28270 BR Minas Gerais Lambari
187.18.138.0/23 512
0.0%
AS28270 BR
187.110.210.0/23 512
0.0%
AS28270 BR
138.121.220.0/24 256
0.0%
AS28270 BR Minas Gerais Santa Rita de Caldas
187.18.137.0/24 256
0.0%
AS28270 BR
187.110.209.0/24 256
0.0%
AS28270 BR
187.110.218.0/24 256
0.0%
AS28270 BR
187.110.221.0/24 256
0.0%
AS28270 BR

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS28270 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
177.70.128.0/20 692,465 2026-07-23 17:54:11
201.149.120.0/22 692,065 2026-07-23 17:54:11
160.238.220.0/22 688,154 2026-07-23 17:54:11
168.232.116.0/22 687,808 2026-07-23 17:54:11
200.94.240.0/22 477,469 2026-07-23 17:54:04
177.66.64.0/21 468,569 2026-07-23 17:54:04
187.18.128.0/17 148,619 2026-07-23 17:51:59
189.45.64.0/18 147,745 2026-07-23 17:54:02
168.228.128.0/22 91,799 2026-07-23 17:54:04
177.87.144.0/21 90,910 2026-07-23 17:54:03
187.110.208.0/20 84,912 2026-07-23 17:51:19
179.191.144.0/20 84,134 2026-07-23 17:51:24
170.0.204.0/22 79,756 2026-07-23 17:51:51
189.50.144.0/20 76,806 2026-07-23 17:51:19
170.245.100.0/22 76,720 2026-07-23 17:51:19
177.75.208.0/20 75,685 2026-07-23 17:51:24
179.191.128.0/20 74,786 2026-07-23 17:51:24
131.221.68.0/22 74,635 2026-07-23 17:51:19
138.117.124.0/22 74,177 2026-07-23 17:51:13
143.255.112.0/22 74,083 2026-07-23 17:51:19
177.75.192.0/20 68,389 2026-07-23 17:51:23
138.121.220.0/24 46,473 2026-07-23 17:54:04
187.108.96.0/20 30,400 2026-07-21 08:47:19
187.18.224.0/21 4,184 2026-07-22 02:32:34
138.122.236.0/24 3,761 2026-07-21 08:55:15
138.122.237.0/24 3,748 2026-07-21 08:55:15
138.121.220.0/22 2,681 2026-07-21 00:22:03
138.122.236.0/22 2,393 2026-07-21 08:55:25
187.110.213.0/24 473 2026-06-27 13:03:37
187.110.210.0/24 472 2026-06-27 13:03:37
187.110.209.0/24 472 2026-06-27 13:03:37
187.110.212.0/24 472 2026-06-27 13:03:37
187.110.214.0/24 471 2026-06-27 13:03:37
187.110.211.0/24 469 2026-06-27 13:03:37
187.110.215.0/24 469 2026-06-27 13:03:37
187.110.208.0/24 305 2026-06-27 13:04:20
189.45.112.0/21 100 2026-06-29 04:21:16
189.45.120.0/21 100 2026-06-29 04:21:16
189.45.104.0/21 100 2026-06-29 04:21:16

Frequently Asked Questions

What is AS28270?

AS28270 is an Autonomous System Number assigned to AS28270. 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 AS28270 announce?

AS28270 announces 69.1K IPv4 addresses distributed across 39 routed CIDR prefixes. The network is registered in Brazil.

Who operates AS28270?

AS28270 is operated by AS28270. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.

What country is AS28270 registered in?

AS28270 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-23 18:25:31 UTC
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