AS39738
Telecom Castilla La Mancha SA
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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 82.86.0.0/18 | 16.4K |
0.0%
|
Telecom Castilla La Mancha SA | ES | Madrid | Madrid |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS39738 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 |
|---|---|---|
| 82.86.0.0/19 | 6,894 | 2026-07-23 12:37:15 |
| 82.86.32.0/19 | 6,557 | 2026-07-23 12:37:15 |
Frequently Asked Questions
What is AS39738?
AS39738 is an Autonomous System Number assigned to Telecom Castilla La Mancha SA. 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 AS39738 announce?
AS39738 announces 16.4K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Spain.
Who operates AS39738?
AS39738 is operated by Telecom Castilla La Mancha SA. The organization is based in Spain. You can view all IP ranges and related ASNs on the organization page.
What country is AS39738 registered in?
AS39738 is registered in Spain. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
