AS28509
Cablemas Telecomunicaciones SA de CV
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
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Izzi
izzi is a Mexican telecommunications company owned by Grupo Televisa and operated by Televisión Internacional, S.A. de C.V.
⚠ 5 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS28509 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) |
|---|---|---|
| 187.252.254.0/24 | AS16960, AS28509 | 2026-09-07 12:10:13 |
| 187.252.252.0/22 | AS16960, AS28509 | 2026-09-07 12:10:13 |
| 187.252.255.0/24 | AS16960, AS28509 | 2026-09-06 14:25:06 |
| 187.252.252.0/23 | AS16960, AS28509 | 2026-09-06 12:55:05 |
| 177.238.49.0/24 | AS28509, AS28545 | 2026-09-06 12:55:05 |
Network profile
Source: PeeringDB →Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28509 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 |
|---|---|---|
| 177.238.20.0/22 | 407,776 | 2026-09-07 10:19:29 |
| 187.253.13.0/24 | 352,343 | 2026-09-07 11:41:28 |
| 187.253.12.0/24 | 352,173 | 2026-09-07 11:41:28 |
| 187.253.173.0/24 | 351,855 | 2026-09-07 11:41:28 |
| 177.238.44.0/24 | 335,654 | 2026-09-07 11:41:28 |
| 177.238.239.0/24 | 335,503 | 2026-09-07 11:41:28 |
| 177.236.166.0/23 | 335,467 | 2026-09-07 11:41:28 |
| 177.238.45.0/24 | 334,952 | 2026-09-07 11:41:28 |
| 187.253.172.0/23 | 334,379 | 2026-09-07 12:06:27 |
| 189.220.188.0/22 | 318,545 | 2026-09-07 11:41:28 |
| 189.220.184.0/21 | 318,257 | 2026-09-07 11:41:28 |
| 177.238.50.0/24 | 317,286 | 2026-09-07 11:41:28 |
| 187.253.208.0/24 | 182,988 | 2026-09-07 12:06:27 |
| 187.253.201.0/24 | 175,396 | 2026-09-07 12:06:27 |
| 187.253.209.0/24 | 174,669 | 2026-09-07 12:06:27 |
| 189.221.76.0/22 | 172,887 | 2026-09-07 11:41:51 |
| 187.253.128.0/20 | 172,188 | 2026-09-07 10:19:48 |
| 187.253.5.0/24 | 171,669 | 2026-09-07 10:19:48 |
| 187.253.3.0/24 | 171,417 | 2026-09-07 10:19:48 |
| 187.253.254.0/24 | 171,134 | 2026-09-07 10:19:48 |
| 187.185.192.0/20 | 169,645 | 2026-09-07 12:08:54 |
| 189.215.144.0/22 | 166,636 | 2026-09-07 11:41:28 |
| 187.185.80.0/22 | 166,070 | 2026-09-07 11:41:28 |
| 187.185.32.0/22 | 165,912 | 2026-09-07 11:41:28 |
| 187.253.15.0/24 | 164,593 | 2026-09-07 10:19:48 |
| 187.253.250.0/24 | 164,381 | 2026-09-07 10:19:48 |
| 187.252.242.0/24 | 164,228 | 2026-09-07 11:41:28 |
| 187.253.252.0/24 | 163,505 | 2026-09-07 10:19:48 |
| 189.215.160.0/22 | 162,733 | 2026-09-07 10:19:48 |
| 187.253.248.0/23 | 151,155 | 2026-09-07 11:41:28 |
| 189.220.48.0/24 | 148,295 | 2026-09-07 11:41:28 |
| 189.220.50.0/24 | 148,218 | 2026-09-07 11:41:28 |
| 189.220.49.0/24 | 147,757 | 2026-09-07 11:41:28 |
| 189.221.56.0/21 | 144,183 | 2026-09-07 11:41:51 |
| 189.221.48.0/21 | 143,799 | 2026-09-07 11:41:51 |
| 189.202.0.0/20 | 143,534 | 2026-09-07 11:41:28 |
| 187.252.64.0/20 | 143,403 | 2026-09-07 11:41:28 |
| 187.185.112.0/20 | 143,366 | 2026-09-07 11:41:28 |
| 187.185.161.0/24 | 142,718 | 2026-09-07 11:41:28 |
| 201.160.72.0/21 | 142,686 | 2026-09-07 12:08:49 |
| 189.220.51.0/24 | 142,555 | 2026-09-07 11:41:18 |
| 187.185.163.0/24 | 142,546 | 2026-09-07 11:41:28 |
| 189.220.44.0/24 | 140,851 | 2026-09-07 11:41:28 |
| 189.221.72.0/21 | 139,183 | 2026-09-07 11:41:51 |
| 189.221.48.0/20 | 139,161 | 2026-09-07 11:41:51 |
| 189.221.80.0/20 | 139,050 | 2026-09-07 11:41:51 |
| 189.215.202.0/24 | 138,882 | 2026-09-07 11:41:51 |
| 189.215.160.0/21 | 137,383 | 2026-09-07 11:41:51 |
| 189.220.0.0/20 | 137,339 | 2026-09-07 11:41:28 |
| 189.215.192.0/22 | 136,990 | 2026-09-07 11:41:28 |
Showing top 50 of 380 announced prefixes by sample volume.
Frequently Asked Questions
What is AS28509?
AS28509 is an Autonomous System Number assigned to Cablemas Telecomunicaciones SA de CV. 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 AS28509 announce?
AS28509 announces 297.5K IPv4 addresses distributed across 198 routed CIDR prefixes. The network is registered in Mexico.
Who operates AS28509?
AS28509 is operated by Cablemas Telecomunicaciones SA de CV. The organization is based in Mexico. You can view all IP ranges and related ASNs on the organization page.
What country is AS28509 registered in?
AS28509 is registered in Mexico. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
