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 |
|---|---|---|---|---|---|---|
| 5.164.48.0/20 | 4.1K |
98.0%
|
JSC ER-Telecom Holding | RU | Chelyabinsk Oblast | Magnitogorsk |
| 109.195.208.0/20 | 4.1K |
99.8%
|
JSC ER-Telecom Holding | RU | Chelyabinsk Oblast | Magnitogorsk |
| 176.215.192.0/20 | 4.1K |
93.6%
|
JSC ER-Telecom Holding | RU | Chelyabinsk Oblast | Magnitogorsk |
| 109.163.240.0/21 | 2.0K |
99.9%
|
JSC ER-Telecom Holding | RU | Chelyabinsk Oblast | Magnitogorsk |
| 176.215.208.0/21 | 2.0K |
0.0%
|
JSC ER-Telecom Holding | RU | — | — |
| 188.187.231.0/24 | 256 |
100.0%
|
JSC ER-Telecom Holding | RU | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS56377 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 |
|---|---|---|
| 5.164.52.0/22 | 10,255 | 2026-07-24 15:47:26 |
| 5.164.56.0/22 | 10,253 | 2026-07-24 15:47:26 |
| 109.163.240.0/22 | 9,728 | 2026-07-24 15:47:26 |
| 176.215.212.0/22 | 9,727 | 2026-07-24 15:47:26 |
| 176.215.192.0/22 | 9,708 | 2026-07-24 15:47:26 |
| 176.215.200.0/22 | 6,555 | 2026-07-24 15:47:26 |
| 5.164.60.0/22 | 5,924 | 2026-07-24 15:46:38 |
| 5.164.48.0/22 | 5,908 | 2026-07-24 15:46:38 |
| 5.164.48.0/20 | 5,891 | 2026-07-24 15:46:38 |
| 109.195.220.0/22 | 5,448 | 2026-07-24 15:46:40 |
| 176.215.204.0/22 | 5,426 | 2026-07-24 15:46:40 |
| 109.195.208.0/20 | 5,407 | 2026-07-24 15:46:40 |
| 176.215.208.0/22 | 5,402 | 2026-07-24 15:46:40 |
| 176.215.208.0/21 | 5,398 | 2026-07-24 15:46:40 |
| 109.163.240.0/21 | 5,389 | 2026-07-24 15:46:40 |
| 188.187.231.0/24 | 5,384 | 2026-07-24 15:46:40 |
| 176.215.192.0/20 | 5,362 | 2026-07-24 15:46:40 |
Frequently Asked Questions
What is AS56377?
AS56377 is an Autonomous System Number assigned to JSC ER-Telecom Holding. 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 AS56377 announce?
AS56377 announces 16.6K IPv4 addresses distributed across 6 routed CIDR prefixes. The network is registered in Russia.
Who operates AS56377?
AS56377 is operated by JSC ER-Telecom Holding. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.
What country is AS56377 registered in?
AS56377 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
