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
- Multiple-origin (MOAS) routing anomaly −12
- Enterprise allocation +4
- Trust score 57 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 7 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS27831 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) |
|---|---|---|
| 190.120.128.0/20 | AS13489, AS27831 | 2026-07-17 08:52:34 |
| 181.204.0.0/14 | AS13489, AS27831 | 2026-07-17 08:52:34 |
| 186.97.0.0/16 | AS13489, AS27831 | 2026-07-17 08:52:34 |
| 186.180.0.0/15 | AS13489, AS27831 | 2026-07-17 08:52:34 |
| 181.68.0.0/14 | AS13489, AS27831 | 2026-07-17 08:52:34 |
| 179.12.0.0/14 | AS13489, AS27831 | 2026-07-17 08:52:34 |
| 191.88.0.0/13 | AS13489, AS27831 | 2026-07-17 08:52:34 |
Network profile
Source: PeeringDB →AS27831 — global IP footprint
Cities where AS27831 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 177.252.0.0/14 | 262.1K |
94.3%
|
Colombia Movil | CO | Departamento de Bolívar | Cartagena |
| 179.12.0.0/14 | 262.1K |
88.4%
|
Colombia Movil | CO | Antioquia | Sabaneta |
| 181.68.0.0/14 | 262.1K |
72.7%
|
Colombia Movil | CO | Cesar Department | Agustin Codazzi |
| 181.204.0.0/14 | 262.1K |
89.9%
|
Colombia Movil | CO | Santander Department | Bucaramanga |
| 191.88.0.0/14 | 262.1K |
91.7%
|
Colombia Movil | CO | Quindío Department | Armenia |
| 186.180.0.0/15 | 131.1K |
5.8%
|
Colombia Movil | CO | Bogota D.C. | Bogotá |
| 191.92.0.0/15 | 131.1K |
93.1%
|
Colombia Movil | CO | Antioquia | Medellín |
| 186.97.0.0/16 | 65.5K |
96.6%
|
Colombia Movil | CO | Antioquia | Medellín |
| 191.95.0.0/16 | 65.5K |
92.9%
|
Colombia Movil | CO | Antioquia | Medellín |
| 191.94.128.0/17 | 32.8K |
93.3%
|
Colombia Movil | CO | — | — |
| 191.94.64.0/18 | 16.4K |
93.0%
|
Colombia Movil | CO | — | — |
| 190.102.192.0/19 | 8.2K |
79.2%
|
Colombia Movil | CO | — | — |
| 190.120.128.0/20 | 4.1K |
90.6%
|
Colombia Movil | CO | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS27831 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 |
|---|---|---|
| 179.12.0.0/14 | 6,352 | 2026-07-16 09:06:23 |
| 181.68.0.0/14 | 6,321 | 2026-07-16 09:06:23 |
| 191.88.0.0/13 | 5,669 | 2026-07-16 09:06:23 |
| 186.97.0.0/16 | 5,663 | 2026-07-16 09:06:23 |
| 190.102.192.0/19 | 5,628 | 2026-07-16 09:06:23 |
| 190.120.128.0/20 | 5,617 | 2026-07-16 09:06:23 |
| 186.180.0.0/15 | 5,567 | 2026-07-16 09:06:23 |
| 181.204.0.0/14 | 5,564 | 2026-07-16 09:06:23 |
| 177.252.0.0/14 | 5,556 | 2026-07-16 09:00:15 |
| 179.12.0.0/15 | 157 | 2026-07-15 14:43:46 |
| 181.204.0.0/15 | 157 | 2026-07-15 14:43:50 |
| 177.252.0.0/15 | 157 | 2026-07-15 14:43:46 |
| 181.206.0.0/15 | 157 | 2026-07-15 14:43:50 |
| 181.68.0.0/15 | 156 | 2026-07-15 14:43:50 |
| 179.14.0.0/15 | 156 | 2026-07-15 14:43:46 |
| 191.92.0.0/14 | 156 | 2026-07-15 14:45:13 |
| 177.254.0.0/15 | 155 | 2026-07-15 14:43:46 |
| 191.88.0.0/14 | 154 | 2026-07-15 14:45:13 |
| 181.70.0.0/15 | 153 | 2026-07-15 14:43:50 |
Frequently Asked Questions
What is AS27831?
AS27831 is an Autonomous System Number assigned to Colombia Movil. 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 AS27831 announce?
AS27831 announces 1.77M IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in Colombia.
Who operates AS27831?
AS27831 is operated by Colombia Movil. The organization is based in Colombia. You can view all IP ranges and related ASNs on the organization page.
What country is AS27831 registered in?
AS27831 is registered in Colombia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
