$ query “AS20473” --type=asn → 1 result(s)

AS20473 · AS-VULTR

The Constant Company LLC

AS20473 is operated by The Constant Company LLC and serves as a major transit provider, registered in the United States since 2001. The system announces an impressive 1.4 million IPv4 addresses, including a /15, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in the Netherlands and the United Kingdom, and smaller footprints in 31 additional countries. Prefix announcements for this AS were recently updated.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #79 by Degree — Top 100 by unique BGP neighbor count

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
May 11, 2001
Last Changed
March 04, 2026
Last Seen
April 19, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
1 549 / 527
IPv6 Prefixes (raw / aggregated)
369 / 321
IPv4 Addresses
1 391 872
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇺🇸 United States (1 399 552 IPs), 🇳🇱 Netherlands (162 192 IPs), 🇬🇧 United Kingdom (149 920 IPs) and 31 more
Prefix Changed
April 20, 2026

Reputation

Reputation
Good — 127 flagged IPs out of 1 391 872 total (0.01%)
Tor Exit Nodes
3 known Tor exit nodes in this network
Open Proxies
19 known open proxies in this network

Connectivity Summary

Upstream Providers
22 upstreams providing transit
Peers
555 networks exchanging traffic without transit
Downstream Customers
614 downstreams buying transit
Unclassified
533 unclassified BGP neighbors
Degree
1 724 unique BGP neighbors
Reach
29 406 networks in customer cone

Upstream Providers (22)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS7195 — EDGEUNO
  • AS13335 — CLOUDFLARENET
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS3549 — LVLT-3549
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS15830 — EQUINIX
  • AS9498 — BBIL-AP
  • and 12 more

Prefix Lists

IPv4 Prefixes (1 549 total)

  • 45.76.0.0/15 (131 072 addresses (/15 prefix))
  • 44.33.0.0/16 (65 536 addresses (/16 prefix))
  • 45.32.0.0/16 (65 536 addresses (/16 prefix))
  • 152.39.128.0/17 (32 768 addresses (/17 prefix))
  • 95.179.128.0/17 (32 768 addresses (/17 prefix))
  • 139.84.128.0/17 (32 768 addresses (/17 prefix))
  • 149.28.128.0/17 (32 768 addresses (/17 prefix))
  • 64.176.0.0/17 (32 768 addresses (/17 prefix))
  • 144.202.0.0/17 (32 768 addresses (/17 prefix))
  • 108.61.128.0/17 (32 768 addresses (/17 prefix))
  • 155.138.128.0/17 (32 768 addresses (/17 prefix))
  • 149.248.0.0/18 (16 384 addresses (/18 prefix))
  • 167.179.64.0/18 (16 384 addresses (/18 prefix))
  • 158.247.192.0/18 (16 384 addresses (/18 prefix))
  • 104.238.128.0/18 (16 384 addresses (/18 prefix))
  • 45.63.64.0/18 (16 384 addresses (/18 prefix))
  • 64.176.192.0/18 (16 384 addresses (/18 prefix))
  • 65.20.64.0/18 (16 384 addresses (/18 prefix))
  • 136.244.64.0/18 (16 384 addresses (/18 prefix))
  • 66.42.64.0/18 (16 384 addresses (/18 prefix))
  • 108.61.0.0/18 (16 384 addresses (/18 prefix))
  • 149.28.64.0/18 (16 384 addresses (/18 prefix))
  • 216.238.64.0/18 (16 384 addresses (/18 prefix))
  • 139.180.128.0/18 (16 384 addresses (/18 prefix))
  • 78.141.192.0/18 (16 384 addresses (/18 prefix))
  • 207.246.64.0/18 (16 384 addresses (/18 prefix))
  • 207.148.64.0/18 (16 384 addresses (/18 prefix))
  • 140.82.0.0/18 (16 384 addresses (/18 prefix))
  • 192.248.128.0/18 (16 384 addresses (/18 prefix))
  • 141.164.32.0/19 (8 192 addresses (/19 prefix))
  • 64.237.32.0/19 (8 192 addresses (/19 prefix))
  • 139.180.192.0/19 (8 192 addresses (/19 prefix))
  • 70.34.192.0/19 (8 192 addresses (/19 prefix))
  • 149.28.32.0/19 (8 192 addresses (/19 prefix))
  • 66.135.0.0/19 (8 192 addresses (/19 prefix))
  • 137.220.32.0/19 (8 192 addresses (/19 prefix))
  • 208.167.224.0/19 (8 192 addresses (/19 prefix))
  • 66.55.128.0/19 (8 192 addresses (/19 prefix))
  • 202.182.96.0/19 (8 192 addresses (/19 prefix))
  • 199.247.0.0/19 (8 192 addresses (/19 prefix))
  • 209.222.0.0/19 (8 192 addresses (/19 prefix))
  • 66.42.32.0/19 (8 192 addresses (/19 prefix))
  • 198.13.32.0/19 (8 192 addresses (/19 prefix))
  • 136.242.96.0/19 (8 192 addresses (/19 prefix))
  • 207.148.0.0/19 (8 192 addresses (/19 prefix))
  • 136.227.160.0/19 (8 192 addresses (/19 prefix))
  • 64.176.160.0/19 (8 192 addresses (/19 prefix))
  • 209.250.224.0/19 (8 192 addresses (/19 prefix))
  • 134.199.64.0/19 (8 192 addresses (/19 prefix))
  • 108.61.64.0/19 (8 192 addresses (/19 prefix))
  • and 477 more

IPv6 Prefixes (369 total)

  • 2a0f:13c0::/29
  • 2a0b:64c4::/31
  • 2a04:a142::/32
  • 2a07:a341::/32
  • 2a06:1287::/32
  • 2a06:25c0::/32
  • 2a0e:9d40::/32
  • 2a0f:f42::/32
  • 2a04:30c0::/32
  • 2a06:3e87::/32
  • 2a03:4a81::/32
  • 2a03:60c0::/32
  • 2a07:5580::/32
  • 2a06:4c00::/32
  • 2a05:2d07::/32
  • 2607:7180::/32
  • 2a04:a147::/32
  • 2a14:7584:8000::/35
  • 2a05:f480:1000::/36
  • 2a05:f480:2000::/36
  • 2001:19f0:5000::/36
  • 2401:c080:1000::/36
  • 2001:19f0:6000::/36
  • 2001:19f0:9000::/36
  • 2602:f6ac::/36
  • 2001:19f0:b000::/37
  • 2401:c080:3000::/37
  • 2401:c080:2000::/37
  • 2001:19f0:4000::/37
  • 2a05:f480:3000::/37
  • 2001:19f0:a800::/37
  • 2001:19f0:1000::/37
  • 2001:19f0:7000::/37
  • 2401:c080:3800::/38
  • 2a05:f480:3800::/38
  • 2001:19f0:c800::/38
  • 2001:19f0:c000::/38
  • 2001:19f0:b800::/38
  • 2001:19f0:8800::/38
  • 2001:19f0:8000::/38
  • 2001:19f0::/38
  • 2a14:7584:ec00::/40
  • 2a14:7583:e500::/40
  • 2a14:7584:eb00::/40
  • 2602:f4fb:f00::/40
  • 2a14:7581:3b00::/40
  • 2a05:dfc3:f900::/40
  • 2620:53:a000::/44
  • 2a06:de01:d0::/44
  • 2a14:7584:e370::/44
  • and 271 more