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 3 internet exchanges: MIX-IT, VSIX: Primary, MIX Bologna
AS21309 — global IP footprint
Cities where AS21309 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 77.89.0.0/18 | 16.4K |
13.9%
|
HERABIT S.p.A. | IT | Emilia-Romagna | Bologna |
| 213.209.192.0/18 | 16.4K |
4.1%
|
HERABIT S.p.A. | IT | Veneto | Noventa Padovana |
| 83.216.160.0/19 | 8.2K |
19.4%
|
HERABIT S.p.A. | IT | Emilia-Romagna | Modena |
| 86.110.128.0/19 | 8.2K |
1.4%
|
HERABIT S.p.A. | IT | Emilia-Romagna | Castellarano |
| 188.125.96.0/19 | 8.2K |
44.7%
|
HERABIT S.p.A. | IT | Veneto | Treviso |
| 213.174.160.0/19 | 8.2K |
5.1%
|
HERABIT S.p.A. | IT | Emilia-Romagna | Faenza |
| 31.216.240.0/20 | 4.1K |
87.8%
|
HERABIT S.p.A. | IT | Veneto | Miane |
| 80.86.144.0/20 | 4.1K |
19.1%
|
HERABIT S.p.A. | IT | Veneto | Preganziol |
| 5.63.136.0/21 | 2.0K |
0.0%
|
HERABIT S.p.A. | IT | — | — |
| 185.123.8.0/22 | 1.0K |
0.0%
|
HERABIT S.p.A. | IT | — | — |
| 185.182.196.0/22 | 1.0K |
25.6%
|
HERABIT S.p.A. | IT | Veneto | Ormelle |
| 185.239.96.0/22 | 1.0K |
0.0%
|
HERABIT S.p.A. | IT | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21309 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 |
|---|---|---|
| 77.89.0.0/20 | 16,789 | 2026-07-24 16:08:07 |
| 77.89.16.0/20 | 16,784 | 2026-07-24 16:08:07 |
| 188.125.122.0/24 | 15,109 | 2026-07-16 14:18:52 |
| 213.209.224.0/19 | 5,637 | 2026-07-24 15:47:02 |
| 213.174.160.0/20 | 5,630 | 2026-07-24 15:47:02 |
| 213.209.192.0/19 | 5,624 | 2026-07-24 15:47:02 |
| 213.174.176.0/20 | 5,620 | 2026-07-24 15:47:02 |
| 5.63.136.0/21 | 5,589 | 2026-07-24 15:47:02 |
| 77.89.32.0/19 | 5,426 | 2026-07-24 15:47:02 |
| 77.89.0.0/18 | 5,415 | 2026-07-24 15:47:02 |
| 77.89.0.0/19 | 5,413 | 2026-07-24 15:47:02 |
| 185.239.96.0/22 | 5,393 | 2026-07-24 15:47:02 |
| 86.110.128.0/19 | 5,380 | 2026-07-24 15:47:02 |
| 185.123.8.0/22 | 5,371 | 2026-07-24 15:47:02 |
| 83.216.160.0/19 | 5,364 | 2026-07-24 15:47:02 |
| 86.110.128.0/20 | 5,352 | 2026-07-24 15:47:02 |
| 83.216.176.0/20 | 5,352 | 2026-07-24 15:47:02 |
| 86.110.144.0/20 | 5,348 | 2026-07-24 15:47:02 |
| 83.216.160.0/20 | 5,344 | 2026-07-24 15:47:02 |
| 213.209.192.0/18 | 5,327 | 2026-07-24 15:47:02 |
| 213.174.160.0/19 | 5,326 | 2026-07-24 15:47:02 |
| 31.216.252.0/22 | 5,196 | 2026-07-24 15:47:02 |
| 31.216.240.0/22 | 5,195 | 2026-07-24 15:47:02 |
| 31.216.244.0/22 | 5,176 | 2026-07-24 15:47:02 |
| 31.216.248.0/22 | 5,160 | 2026-07-24 15:47:02 |
| 80.86.156.0/22 | 5,138 | 2026-07-24 15:47:02 |
| 188.125.108.0/22 | 5,138 | 2026-07-24 15:47:02 |
| 80.86.152.0/22 | 5,133 | 2026-07-24 15:47:02 |
| 80.86.144.0/22 | 5,129 | 2026-07-24 15:47:02 |
| 188.125.124.0/22 | 5,128 | 2026-07-24 15:47:02 |
| 188.125.104.0/22 | 5,125 | 2026-07-24 15:47:02 |
| 188.125.112.0/22 | 5,124 | 2026-07-24 15:47:02 |
| 80.86.148.0/22 | 5,118 | 2026-07-24 15:47:02 |
| 188.125.100.0/22 | 5,115 | 2026-07-24 15:47:02 |
| 188.125.96.0/22 | 5,112 | 2026-07-24 15:47:02 |
| 188.125.116.0/22 | 5,102 | 2026-07-24 15:47:02 |
| 188.125.120.0/22 | 5,086 | 2026-07-24 15:47:02 |
| 185.182.198.0/23 | 5,082 | 2026-07-24 15:47:02 |
| 185.182.196.0/23 | 5,072 | 2026-07-24 15:47:02 |
| 213.174.176.0/21 | 3,588 | 2026-07-24 13:29:51 |
| 213.174.160.0/21 | 3,301 | 2026-07-24 15:47:02 |
| 83.216.160.0/21 | 2,676 | 2026-07-24 13:26:31 |
| 86.110.144.0/21 | 2,666 | 2026-07-24 13:26:35 |
| 86.110.136.0/21 | 2,608 | 2026-07-24 13:26:35 |
| 86.110.128.0/21 | 2,602 | 2026-07-24 13:26:35 |
| 86.110.152.0/21 | 2,591 | 2026-07-24 13:26:35 |
| 83.216.168.0/21 | 2,586 | 2026-07-24 13:26:31 |
| 77.89.48.0/20 | 2,573 | 2026-07-24 13:26:24 |
| 77.89.32.0/20 | 2,573 | 2026-07-24 13:26:24 |
| 83.216.176.0/21 | 2,556 | 2026-07-24 13:26:31 |
Showing top 50 of 57 announced prefixes by sample volume.
Frequently Asked Questions
What is AS21309?
AS21309 is an Autonomous System Number assigned to HERABIT S.p.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 AS21309 announce?
AS21309 announces 78.8K IPv4 addresses distributed across 12 routed CIDR prefixes. The network is registered in Italy.
Who operates AS21309?
AS21309 is operated by HERABIT S.p.A.. The organization is based in Italy. You can view all IP ranges and related ASNs on the organization page.
What country is AS21309 registered in?
AS21309 is registered in Italy. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
