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 →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 93.89.224.0/20 | 4.1K |
0.7%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 185.33.232.0/22 | 1.0K |
1.7%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 185.111.232.0/23 | 512 |
0.0%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 84.51.21.0/24 | 256 |
98.4%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 84.51.25.0/24 | 256 |
98.4%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 84.51.38.0/24 | 256 |
96.9%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 91.93.146.0/24 | 256 |
95.3%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 91.93.149.0/24 | 256 |
98.8%
|
Isimtescil Bilisim A.S. | TR | Istanbul | Istanbul |
| 91.93.151.0/24 | 256 |
75.0%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 91.93.152.0/24 | 256 |
97.7%
|
Isimtescil Bilisim A.S. | TR | — | — |
| 185.111.234.0/24 | 256 |
0.0%
|
Isimtescil Bilisim A.S. | TR | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS51557 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 |
|---|---|---|
| 84.51.21.0/24 | 41,125 | 2026-07-23 20:04:57 |
| 84.51.38.0/24 | 41,085 | 2026-07-23 20:04:57 |
| 84.51.25.0/24 | 41,082 | 2026-07-23 20:04:57 |
| 185.111.232.0/23 | 8,035 | 2026-07-23 19:18:58 |
| 93.89.224.0/20 | 7,891 | 2026-07-23 19:35:35 |
| 185.33.232.0/22 | 7,889 | 2026-07-23 19:35:40 |
| 185.111.234.0/24 | 7,879 | 2026-07-23 19:35:40 |
| 91.93.152.0/24 | 6,100 | 2026-07-23 19:18:28 |
| 91.93.151.0/24 | 6,088 | 2026-07-23 19:18:28 |
| 91.93.146.0/24 | 6,086 | 2026-07-23 19:18:28 |
| 91.93.149.0/24 | 6,074 | 2026-07-23 19:18:28 |
Frequently Asked Questions
What is AS51557?
AS51557 is an Autonomous System Number assigned to Isimtescil Bilisim A.S.. 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 AS51557 announce?
AS51557 announces 7.7K IPv4 addresses distributed across 11 routed CIDR prefixes. The network is registered in Türkiye.
Who operates AS51557?
AS51557 is operated by Isimtescil Bilisim A.S.. The organization is based in Türkiye. You can view all IP ranges and related ASNs on the organization page.
What country is AS51557 registered in?
AS51557 is registered in Türkiye. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
