$ query “AS8075” --type=asn → 1 result(s)

AS8075 · MICROSOFT-CORP-MSN-AS-BLOCK

Microsoft Corporation

AS8075 belongs to Microsoft Corporation and is a hosting access provider, registered in the United States since 1997. The system announces a whopping 81.1 million IPv4 addresses (2.19% of routable IPv4 space), including a /10, and supports IPv6. Its primary geographic footprint is in the United States, with additional presence in the United Kingdom and Australia, and smaller footprints in 39 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Space Overlord — Over 10 million IPv4 addresses
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Access Provider
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
March 31, 1997
Last Changed
March 04, 2026
Last Seen
June 27, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
1 130 / 879
IPv6 Prefixes (raw / aggregated)
110 / 85
IPv4 Addresses
81 080 064
Largest IPv4 Prefix
/10 (4 194 304 addresses)
Largest IPv6 Prefix
/25
Geolocated Countries
🇺🇸 United States (54 896 128 IPs), 🇬🇧 United Kingdom (41 357 856 IPs), 🇦🇺 Australia (23 546 624 IPs) and 39 more
Prefix Changed
June 27, 2026

Reputation

Reputation
Fair — 3 774 flagged IPs out of 81 080 064 total (0.00%)
Open Proxies
13 known open proxies in this network

Connectivity Summary

Upstream Providers
11 upstreams providing transit
Peers
288 networks exchanging traffic without transit
Downstream Customers
7 downstreams buying transit
Unclassified
2 unclassified BGP neighbors
Degree
308 unique BGP neighbors
Reach
7 networks in customer cone

Upstream Providers (11)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS4826 — VOCUS-BACKBONE-AS
  • AS4755 — TATACOMM-AS
  • AS52025 — PARADOXNETWORKS-LIMITED
  • AS6762 — SEABONE-NET (Tier-1 transit)
  • AS6453 — AS6453 (Tier-1 transit)
  • AS3786 — LGDACOM
  • AS12956 — TELXIUS (Tier-1 transit)
  • and 1 more

Prefix Lists

IPv4 Prefixes (1 130 total)

  • 48.192.0.0/10 (4 194 304 addresses (/10 prefix))
  • 4.192.0.0/10 (4 194 304 addresses (/10 prefix))
  • 20.64.0.0/10 (4 194 304 addresses (/10 prefix))
  • 20.192.0.0/10 (4 194 304 addresses (/10 prefix))
  • 172.128.0.0/10 (4 194 304 addresses (/10 prefix))
  • 107.32.0.0/11 (2 097 152 addresses (/11 prefix))
  • 20.0.0.0/11 (2 097 152 addresses (/11 prefix))
  • 4.160.0.0/11 (2 097 152 addresses (/11 prefix))
  • 48.160.0.0/11 (2 097 152 addresses (/11 prefix))
  • 52.224.0.0/11 (2 097 152 addresses (/11 prefix))
  • 13.64.0.0/11 (2 097 152 addresses (/11 prefix))
  • 52.160.0.0/11 (2 097 152 addresses (/11 prefix))
  • 20.160.0.0/12 (1 048 576 addresses (/12 prefix))
  • 135.224.0.0/12 (1 048 576 addresses (/12 prefix))
  • 74.144.0.0/12 (1 048 576 addresses (/12 prefix))
  • 40.80.0.0/12 (1 048 576 addresses (/12 prefix))
  • 4.144.0.0/12 (1 048 576 addresses (/12 prefix))
  • 57.160.0.0/12 (1 048 576 addresses (/12 prefix))
  • 172.192.0.0/12 (1 048 576 addresses (/12 prefix))
  • 145.176.0.0/12 (1 048 576 addresses (/12 prefix))
  • 20.48.0.0/12 (1 048 576 addresses (/12 prefix))
  • 52.96.0.0/12 (1 048 576 addresses (/12 prefix))
  • 31.80.0.0/13 (524 288 addresses (/13 prefix))
  • 20.40.0.0/13 (524 288 addresses (/13 prefix))
  • 104.40.0.0/13 (524 288 addresses (/13 prefix))
  • 104.208.0.0/13 (524 288 addresses (/13 prefix))
  • 40.112.0.0/13 (524 288 addresses (/13 prefix))
  • 57.152.0.0/13 (524 288 addresses (/13 prefix))
  • 52.152.0.0/13 (524 288 addresses (/13 prefix))
  • 20.184.0.0/13 (524 288 addresses (/13 prefix))
  • 191.232.0.0/13 (524 288 addresses (/13 prefix))
  • 68.240.0.0/13 (524 288 addresses (/13 prefix))
  • 40.96.0.0/13 (524 288 addresses (/13 prefix))
  • 40.64.0.0/13 (524 288 addresses (/13 prefix))
  • 172.208.0.0/13 (524 288 addresses (/13 prefix))
  • 52.136.0.0/13 (524 288 addresses (/13 prefix))
  • 52.120.0.0/14 (262 144 addresses (/14 prefix))
  • 13.104.0.0/14 (262 144 addresses (/14 prefix))
  • 74.160.0.0/14 (262 144 addresses (/14 prefix))
  • 40.76.0.0/14 (262 144 addresses (/14 prefix))
  • 72.152.0.0/14 (262 144 addresses (/14 prefix))
  • 13.240.0.0/14 (262 144 addresses (/14 prefix))
  • 72.144.0.0/14 (262 144 addresses (/14 prefix))
  • 74.176.0.0/14 (262 144 addresses (/14 prefix))
  • 74.224.0.0/14 (262 144 addresses (/14 prefix))
  • 40.104.0.0/14 (262 144 addresses (/14 prefix))
  • 20.36.0.0/14 (262 144 addresses (/14 prefix))
  • 74.240.0.0/14 (262 144 addresses (/14 prefix))
  • 40.120.0.0/14 (262 144 addresses (/14 prefix))
  • 98.64.0.0/14 (262 144 addresses (/14 prefix))

IPv6 Prefixes (110 total)

  • 2603:1000::/25
  • 2a00:1c68::/29
  • 2404:f802::/31
  • 2404:f800::/32
  • 2a01:111::/32
  • 2620:1ec::/36
  • 2620:0:30::/45
  • 2602:f742::/46
  • 2a04:b0c0:10::/46
  • 2001:df0:d8::/47
  • 2607:9240:48::/47
  • 2620:7d:e::/47
  • 2607:9240:40::/47
  • 2606:e540:c00::/47
  • 2602:f8d5:a0::/47
  • 2602:fdeb:62::/47
  • 2602:fdeb:54::/47
  • 2001:698::/47
  • 2602:fdeb:52::/47
  • 2607:9240:47::/48
  • 2620:12c:90b0::/48
  • 2602:f8c6:20::/48
  • 2602:f742:3f::/48
  • 2602:f8d5:a3::/48
  • 2602:f8d5:a6::/48
  • 2602:f8d5:a8::/48
  • 2602:fc31:4::/48
  • 2602:fdeb:50::/48
  • 2602:f742:5::/48
  • 2602:f73e::/48
  • 2602:fdeb:61::/48
  • 2602:812:200a::/48
  • 2602:fdeb:64::/48
  • 2602:801:600a::/48
  • 2604:e700:41::/48
  • 2407:30c0:186::/48
  • 2606:e540:c04::/48
  • 2607:33c0:a0::/48
  • 2407:30c0:184::/48
  • 2607:9240:43::/48
  • 2607:9240:44::/48
  • 2001:67c:4f8::/48
  • 2402:7d80:8888::/48
  • 2607:9240:4a::/48
  • 2402:7d80::/48
  • 2620:7d:d::/48
  • 2401:ef40::/48
  • 2620:b1:e000::/48
  • 2620:bc:2000::/48
  • 2620:10c:5001::/48