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 →
About Rostelecom
Rostelecom is Russia's largest provider of digital services for a wide variety of consumers, households, private businesses, government and municipal authorities, and other telecom providers. Rostelecom interconnects all local public operators' networks into a single national network for long-distance service.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 84.42.16.0/20 | 4.1K |
3.0%
|
Rostelecom | RU | — | — |
| 84.42.0.0/21 | 2.0K |
14.4%
|
Rostelecom | RU | — | — |
| 80.246.64.0/22 | 1.0K |
30.8%
|
Rostelecom | RU | — | — |
| 80.246.68.0/23 | 512 |
2.9%
|
Rostelecom | RU | — | — |
| 80.246.76.0/23 | 512 |
2.3%
|
Rostelecom | RU | — | — |
| 80.246.82.0/23 | 512 |
1.8%
|
Rostelecom | RU | — | — |
| 80.246.88.0/23 | 512 |
0.8%
|
Rostelecom | RU | — | — |
| 80.246.94.0/23 | 512 |
0.0%
|
Rostelecom | RU | Tver Oblast | Rzhev |
| 84.42.10.0/23 | 512 |
10.2%
|
Rostelecom | RU | — | — |
| 84.42.14.0/23 | 512 |
7.8%
|
Rostelecom | RU | — | — |
| 80.246.71.0/24 | 256 |
4.3%
|
Rostelecom | RU | — | — |
| 80.246.73.0/24 | 256 |
1.2%
|
Rostelecom | RU | — | — |
| 80.246.75.0/24 | 256 |
9.0%
|
Rostelecom | RU | — | — |
| 80.246.78.0/24 | 256 |
0.0%
|
Rostelecom | RU | — | — |
| 80.246.81.0/24 | 256 |
3.9%
|
Rostelecom | RU | Tver Oblast | Tver |
| 80.246.85.0/24 | 256 |
1.2%
|
Rostelecom | RU | — | — |
| 80.246.87.0/24 | 256 |
2.0%
|
Rostelecom | RU | — | — |
| 80.246.90.0/24 | 256 |
0.0%
|
Rostelecom | RU | — | — |
| 84.42.9.0/24 | 256 |
10.5%
|
Rostelecom | RU | — | — |
| 84.42.12.0/24 | 256 |
7.8%
|
Rostelecom | RU | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21378 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 |
|---|---|---|
| 84.42.24.0/21 | 5,727 | 2026-07-24 09:52:09 |
| 80.246.64.0/21 | 5,720 | 2026-07-24 09:52:09 |
| 84.42.8.0/21 | 5,717 | 2026-07-24 09:52:09 |
| 80.246.64.0/19 | 5,715 | 2026-07-24 09:52:09 |
| 84.42.16.0/21 | 5,705 | 2026-07-24 09:52:09 |
| 84.42.0.0/19 | 5,703 | 2026-07-24 09:52:09 |
| 84.42.0.0/21 | 5,700 | 2026-07-24 09:52:09 |
Frequently Asked Questions
What is AS21378?
AS21378 is an Autonomous System Number assigned to Rostelecom. 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 AS21378 announce?
AS21378 announces 13.3K IPv4 addresses distributed across 20 routed CIDR prefixes. The network is registered in Russia.
Who operates AS21378?
AS21378 is operated by Rostelecom. The organization is based in Russia. You can view all IP ranges and related ASNs on the organization page.
What country is AS21378 registered in?
AS21378 is registered in Russia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
