AS28521
AT&T COMUNICACIONES DIGITALES S DE RL
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
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 201.130.47.0/24 | 256 |
4.7%
|
AT&T COMUNICACIONES DIGITALES S DE RL | MX | — | — |
| 201.130.56.0/24 | 256 |
0.0%
|
AT&T COMUNICACIONES DIGITALES S DE RL | MX | Mexico City | Iztapalapa |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28521 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 |
|---|---|---|
| 201.130.56.0/24 | 21,640 | 2026-07-30 01:05:40 |
| 201.130.56.0/23 | 9,004 | 2026-07-30 01:18:44 |
| 201.130.47.0/24 | 2,775 | 2026-06-05 09:07:08 |
Frequently Asked Questions
What is AS28521?
AS28521 is an Autonomous System Number assigned to AT&T COMUNICACIONES DIGITALES S DE RL. 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 AS28521 announce?
AS28521 announces 512 IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Mexico.
Who operates AS28521?
AS28521 is operated by AT&T COMUNICACIONES DIGITALES S DE RL. The organization is based in Mexico. You can view all IP ranges and related ASNs on the organization page.
What country is AS28521 registered in?
AS28521 is registered in Mexico. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
