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 →
Network profile
Source: PeeringDB →AS51819 — global IP footprint
Cities where AS51819 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS51819 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 |
|---|---|---|
| 5.166.16.0/22 | 7,350 | 2026-07-20 05:23:16 |
| 5.166.24.0/22 | 7,347 | 2026-07-20 05:23:16 |
| 5.166.0.0/22 | 7,338 | 2026-07-20 05:23:16 |
| 5.166.12.0/22 | 7,333 | 2026-07-20 05:23:16 |
| 5.166.20.0/22 | 7,328 | 2026-07-20 05:23:16 |
| 5.167.32.0/22 | 7,320 | 2026-07-20 05:23:16 |
| 5.165.168.0/22 | 7,316 | 2026-07-20 05:23:16 |
| 5.167.36.0/22 | 7,311 | 2026-07-20 05:23:16 |
| 5.167.40.0/22 | 7,294 | 2026-07-20 05:23:16 |
| 5.167.44.0/22 | 7,290 | 2026-07-20 05:23:16 |
| 5.165.216.0/22 | 7,290 | 2026-07-20 05:23:16 |
| 5.165.220.0/22 | 7,282 | 2026-07-20 05:23:16 |
| 5.166.28.0/22 | 7,242 | 2026-07-20 05:23:16 |
| 5.166.8.0/22 | 7,237 | 2026-07-20 05:23:16 |
| 109.195.116.0/24 | 6,541 | 2026-07-20 05:23:16 |
| 176.214.88.0/22 | 6,502 | 2026-07-20 05:23:48 |
| 176.214.84.0/22 | 6,495 | 2026-07-20 05:23:48 |
| 176.214.72.0/22 | 6,448 | 2026-07-20 05:23:48 |
| 176.215.88.0/22 | 6,428 | 2026-07-20 05:23:48 |
| 5.3.28.0/24 | 5,394 | 2026-07-20 05:23:16 |
| 5.167.88.0/22 | 5,335 | 2026-07-20 05:23:16 |
| 5.166.4.0/22 | 5,334 | 2026-07-20 05:23:16 |
| 5.167.92.0/22 | 5,329 | 2026-07-20 05:23:16 |
| 5.167.80.0/20 | 5,307 | 2026-07-20 05:23:16 |
| 5.167.84.0/22 | 5,296 | 2026-07-20 05:23:16 |
| 5.166.0.0/19 | 5,294 | 2026-07-20 05:23:16 |
| 5.167.32.0/20 | 5,292 | 2026-07-20 05:23:16 |
| 5.165.160.0/20 | 5,286 | 2026-07-20 05:23:16 |
| 5.165.216.0/21 | 5,274 | 2026-07-20 05:23:16 |
| 37.113.240.0/21 | 4,885 | 2026-07-20 05:23:16 |
| 37.113.240.0/22 | 4,884 | 2026-07-20 05:23:16 |
| 37.113.72.0/21 | 4,881 | 2026-07-20 05:23:16 |
| 37.113.72.0/22 | 4,881 | 2026-07-20 05:23:16 |
| 37.113.244.0/22 | 4,872 | 2026-07-20 05:23:16 |
| 37.113.76.0/22 | 4,870 | 2026-07-20 05:23:16 |
| 37.113.88.0/21 | 4,854 | 2026-07-20 05:23:16 |
| 37.113.88.0/22 | 4,850 | 2026-07-20 05:23:16 |
| 37.113.92.0/22 | 4,828 | 2026-07-20 05:23:16 |
| 109.195.117.0/24 | 4,502 | 2026-07-20 05:23:16 |
| 109.195.112.0/20 | 4,502 | 2026-07-20 05:23:16 |
| 176.215.88.0/21 | 4,442 | 2026-07-20 05:23:48 |
| 188.187.233.0/24 | 4,440 | 2026-07-20 05:23:48 |
| 176.214.64.0/19 | 4,439 | 2026-07-20 05:23:48 |
| 176.212.48.0/21 | 4,439 | 2026-07-20 05:23:48 |
| 176.212.84.0/22 | 4,433 | 2026-07-20 05:23:48 |
| 176.212.80.0/21 | 4,432 | 2026-07-20 05:23:48 |
| 176.212.48.0/22 | 4,430 | 2026-07-20 05:23:48 |
| 176.212.52.0/22 | 4,428 | 2026-07-20 05:23:48 |
| 176.212.80.0/22 | 4,427 | 2026-07-20 05:23:48 |
| 176.214.64.0/22 | 4,426 | 2026-07-20 05:23:48 |
Showing top 50 of 56 announced prefixes by sample volume.
Frequently Asked Questions
What is AS51819?
AS51819 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 AS51819 announce?
AS51819 announces 47.6K IPv4 addresses distributed across 15 routed CIDR prefixes. The network is registered in Russia.
Who operates AS51819?
AS51819 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 AS51819 registered in?
AS51819 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
