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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 1 internet exchange: CRIX: Peering LAN
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 190.4.88.0/21 | 2.0K |
5.4%
|
T-Four Services S.A | CR | Provincia de San José | Tibás |
| 38.247.112.0/22 | 1.0K |
0.0%
|
Cogent Communications, LLC | US | — | — |
| 168.205.64.0/22 | 1.0K |
1.6%
|
T-Four Services S.A | CR | Provincia de San José | Tibás |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS16973 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 |
|---|---|---|
| 168.205.64.0/22 | 7,607 | 2026-07-24 13:54:10 |
| 190.4.88.0/21 | 6,536 | 2026-07-24 13:54:10 |
| 190.4.89.0/24 | 5,267 | 2026-07-24 13:53:47 |
| 38.247.112.0/22 | 5,248 | 2026-07-24 13:54:10 |
| 190.4.91.0/24 | 5,242 | 2026-07-24 13:53:52 |
| 190.4.95.0/24 | 5,231 | 2026-07-24 13:53:52 |
| 190.4.94.0/24 | 5,212 | 2026-07-24 13:53:52 |
| 168.205.64.0/24 | 5,184 | 2026-07-24 13:53:46 |
| 190.4.92.0/24 | 5,159 | 2026-07-24 13:53:47 |
| 190.4.93.0/24 | 5,152 | 2026-07-24 13:53:47 |
| 168.205.66.0/24 | 5,145 | 2026-07-24 13:53:52 |
| 190.4.88.0/24 | 5,133 | 2026-07-24 13:53:52 |
| 168.205.65.0/24 | 5,097 | 2026-07-24 13:53:47 |
| 190.4.90.0/24 | 5,087 | 2026-07-24 13:53:46 |
Frequently Asked Questions
What is AS16973?
AS16973 is an Autonomous System Number assigned to T-Four Services S.A. 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 AS16973 announce?
AS16973 announces 4.1K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Costa Rica.
Who operates AS16973?
AS16973 is operated by T-Four Services S.A. The organization is based in Costa Rica. You can view all IP ranges and related ASNs on the organization page.
What country is AS16973 registered in?
AS16973 is registered in Costa Rica. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
