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
- Active-threat / abuse risk −12
- Trust score 53 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
About Microsoft
Microsoft Corporation is an American multinational technology company headquartered in Redmond, Washington. The company became influential in the rise of personal computers through software like Windows and has since expanded into areas such as Internet services, cloud computing, artificial intelligence, video gaming, and more.
⚠ 5 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS8075 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 212.103.45.0/24 | AS8075, AS202280 | 2026-09-30 23:26:52 |
| 103.61.63.0/24 | AS8075, AS138457, AS139137 | 2026-09-29 19:41:42 |
| 103.61.62.0/24 | AS8075, AS139137 | 2026-09-29 19:41:42 |
| 103.61.61.0/24 | AS8075, AS138457, AS139137 | 2026-09-29 19:41:42 |
| 195.244.28.0/23 | AS8075, AS16509 | 2026-09-29 12:44:13 |
Network profile
Source: PeeringDB →Present at 207 internet exchanges: Equinix New York, Equinix Chicago, Equinix Dallas, Equinix Los Angeles, Equinix San Jose, SIX Seattle: MTU 1500, NYIIX New York, Equinix Miami, LINX LON1: Main, Equinix Zurich: Equinix IX - ZH Metro, …
Web3 footprint
AS8075 hosts 37 observed decentralized-network nodes across 5 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS8075 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 |
|---|---|---|
| 153.45.128.0/24 | 21,354 | 2026-09-30 22:50:13 |
| 20.203.0.0/17 | 15,752 | 2026-09-30 13:03:17 |
| 20.74.128.0/17 | 15,719 | 2026-09-30 13:03:17 |
| 20.45.80.0/24 | 15,612 | 2026-09-30 13:03:17 |
| 20.46.192.0/19 | 15,593 | 2026-09-30 13:03:17 |
| 20.196.0.0/18 | 15,589 | 2026-09-30 13:03:17 |
| 20.46.32.0/24 | 15,558 | 2026-09-30 13:03:17 |
| 20.45.64.0/20 | 15,517 | 2026-09-30 13:03:17 |
| 20.46.144.0/20 | 15,503 | 2026-09-30 13:03:17 |
| 20.37.64.0/19 | 15,466 | 2026-09-30 13:03:17 |
| 20.46.32.0/19 | 15,442 | 2026-09-30 13:03:17 |
| 20.45.128.0/20 | 15,070 | 2026-09-30 18:17:01 |
| 40.119.160.0/19 | 14,813 | 2026-09-30 13:03:17 |
| 52.105.196.0/23 | 14,758 | 2026-09-30 13:03:17 |
| 40.95.238.0/23 | 14,717 | 2026-09-30 13:03:17 |
| 40.123.192.0/19 | 14,687 | 2026-09-30 13:03:17 |
| 40.107.142.0/23 | 14,685 | 2026-09-30 13:03:17 |
| 40.120.0.0/20 | 14,643 | 2026-09-30 13:03:17 |
| 40.123.224.0/20 | 14,638 | 2026-09-30 13:03:17 |
| 40.126.192.0/23 | 14,557 | 2026-09-30 13:03:17 |
| 153.45.158.0/24 | 14,403 | 2026-09-30 22:50:13 |
| 134.217.7.0/24 | 14,248 | 2026-09-30 22:52:01 |
| 45.143.224.0/24 | 14,239 | 2026-09-30 22:52:01 |
| 52.98.16.0/22 | 14,203 | 2026-09-30 18:17:01 |
| 40.95.86.0/23 | 14,157 | 2026-09-30 18:17:01 |
| 102.37.0.0/17 | 14,130 | 2026-09-30 18:17:01 |
| 102.133.128.0/17 | 14,125 | 2026-09-30 18:17:01 |
| 40.127.0.0/19 | 14,119 | 2026-09-30 18:17:01 |
| 52.239.232.0/24 | 14,058 | 2026-09-30 18:17:01 |
| 40.107.18.0/23 | 14,051 | 2026-09-30 18:17:01 |
| 102.37.128.0/17 | 14,003 | 2026-09-30 18:17:01 |
| 102.133.0.0/17 | 14,002 | 2026-09-30 18:17:01 |
| 104.47.19.0/24 | 13,937 | 2026-09-30 18:17:01 |
| 193.29.158.0/24 | 12,869 | 2026-09-30 22:50:15 |
| 216.99.86.0/24 | 12,424 | 2026-09-30 22:50:16 |
| 45.143.225.0/24 | 12,323 | 2026-09-30 22:52:01 |
| 185.113.189.0/24 | 12,182 | 2026-09-30 22:50:14 |
| 192.102.165.0/24 | 11,908 | 2026-09-30 22:50:15 |
| 194.49.206.0/24 | 11,892 | 2026-09-30 22:50:15 |
| 185.34.250.0/24 | 11,854 | 2026-09-30 22:50:14 |
| 208.56.2.0/24 | 11,776 | 2026-09-30 22:50:16 |
| 167.92.211.0/24 | 11,617 | 2026-09-30 22:50:13 |
| 185.236.221.0/24 | 11,489 | 2026-09-30 22:50:14 |
| 193.134.96.0/24 | 11,403 | 2026-09-30 22:50:15 |
| 45.156.164.0/24 | 11,367 | 2026-09-30 22:52:01 |
| 185.117.183.0/24 | 11,341 | 2026-09-30 22:50:14 |
| 194.45.24.0/23 | 11,328 | 2026-09-30 22:50:15 |
| 194.180.131.0/24 | 11,268 | 2026-09-30 22:50:15 |
| 103.56.150.0/24 | 11,197 | 2026-09-10 10:07:47 |
| 173.241.37.0/24 | 11,191 | 2026-09-30 22:50:14 |
Showing top 50 of 1,222 announced prefixes by sample volume.
Frequently Asked Questions
What is AS8075?
AS8075 is an Autonomous System Number assigned to Microsoft Corporation. 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 AS8075 announce?
AS8075 announces 80.75M IPv4 addresses distributed across 1,174 routed CIDR prefixes. The network is registered in United States.
Who operates AS8075?
AS8075 is operated by Microsoft Corporation. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS8075 registered in?
AS8075 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
