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Autonomous System

AS27357

Rackspace Hosting

Announced IPs
263,168
CIDR prefixes
40
ASN
AS27357

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.

53/100
Caution
How this score is built
  • Baseline (neutral) 65
  • Active-threat / abuse risk −12
  • Trust score 53 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

About Rackspace Technology

Rackspace Technology, Inc. is an American information technology cloud computing company based in San Antonio, Texas.

Founded
1998
Headquarters
San Antonio
Industry
web hosting service
Employees
4,852

⚠ 3 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS27357 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.

PrefixOrigin ASNsLast detected (UTC)
69.20.95.0/24 AS27357, AS33070 2026-10-27 09:51:36
148.62.86.0/24 AS27357, AS33070 2026-10-27 09:51:36
198.210.16.0/21 AS3356, AS27357 2026-10-27 09:51:36

Web3 footprint

AS27357 hosts 1 observed decentralized-network node across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
146.20.0.0/16 65.5K
1.8%
Rackspace Hosting US — —
69.20.0.0/17 32.8K
13.1%
Rackspace Hosting US — —
146.20.0.0/17 32.8K
1.6%
Rackspace Hosting US — —
104.130.0.0/18 16.4K
1.3%
Rackspace Hosting US — —
146.20.128.0/18 16.4K
2.0%
Rackspace Hosting US — —
162.242.192.0/18 16.4K
1.4%
Rackspace Hosting US — —
173.203.128.0/18 16.4K
5.7%
Rackspace Hosting US — —
204.232.128.0/18 16.4K
6.2%
Rackspace Hosting US — —
207.97.192.0/18 16.4K
9.5%
Rackspace Hosting US — —
23.253.128.0/19 8.2K
1.7%
Rackspace Hosting US — —
74.205.0.0/19 8.2K
5.9%
Rackspace Hosting US — —
104.130.160.0/19 8.2K
1.3%
Rackspace Hosting US — —
104.239.160.0/19 8.2K
1.0%
Rackspace Hosting US — —
146.20.224.0/19 8.2K
0.3%
Rackspace Hosting US — —
162.209.96.0/19 8.2K
1.7%
Rackspace Hosting US — —
172.99.64.0/19 8.2K
0.8%
Rackspace Hosting US — —
204.232.224.0/19 8.2K
7.8%
Rackspace Hosting US Virginia Herndon
72.4.112.0/20 4.1K
17.1%
Rackspace Hosting US — —
104.130.224.0/20 4.1K
1.1%
Rackspace Hosting US — —
104.239.224.0/20 4.1K
0.8%
Rackspace Hosting US — —
146.20.192.0/20 4.1K
5.9%
Rackspace Hosting US — —
159.135.64.0/20 4.1K
0.0%
Rackspace Hosting US — —
104.239.248.0/21 2.0K
16.2%
Rackspace Hosting US — —
146.20.208.0/21 2.0K
3.8%
Rackspace Hosting US — —
198.210.16.0/21 2.0K
0.0%
Rackspace Hosting US — —
104.130.120.0/22 1.0K
1.6%
Rackspace Hosting US — —
142.0.184.0/22 1.0K
99.0%
Rackspace Hosting US — —
146.20.216.0/22 1.0K
0.0%
Rackspace Hosting US — —
65.61.142.0/23 512
2.1%
Rackspace Hosting US — —
65.61.146.0/23 512
0.2%
Rackspace Hosting US — —
65.61.186.0/23 512
0.8%
Rackspace Hosting US — —
65.61.141.0/24 256
19.5%
Rackspace Hosting US — —
65.61.152.0/24 256
84.8%
Rackspace Hosting US — —
148.62.86.0/24 256
0.4%
Rackspace Hosting US — —
156.43.59.0/24 256
0.0%
Rackspace Hosting GB — —
159.135.254.0/24 256
0.0%
Rackspace Hosting US — —
173.204.89.0/24 256
1.2%
Rackspace Hosting US — —
192.68.40.0/24 256
2.0%
Rackspace Hosting NL — —
204.51.224.0/24 256
99.2%
Rackspace Hosting US — —
204.51.235.0/24 256
11.7%
Rackspace Hosting US — —
209.0.201.0/24 256
0.0%
Rackspace Hosting US — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS27357 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
209.0.201.0/24 15,281 2026-10-27 09:19:59
23.253.128.0/19 12,499 2026-10-27 09:15:48
104.239.224.0/20 12,423 2026-10-27 09:15:48
72.4.112.0/20 12,219 2026-10-27 09:15:48
65.61.186.0/23 12,189 2026-10-27 09:15:48
162.209.96.0/19 12,185 2026-10-27 09:15:48
65.61.141.0/24 12,184 2026-10-27 09:15:48
65.61.152.0/24 12,177 2026-10-27 09:15:48
65.61.142.0/23 12,170 2026-10-27 09:15:48
65.61.146.0/23 12,155 2026-10-27 09:15:48
104.239.160.0/19 12,144 2026-10-27 09:15:48
104.130.160.0/19 12,141 2026-10-27 09:15:48
74.205.0.0/19 12,134 2026-10-27 09:15:48
104.239.248.0/21 12,118 2026-10-27 09:15:48
104.130.0.0/18 12,104 2026-10-27 09:15:48
104.130.224.0/20 12,079 2026-10-27 09:15:48
104.130.120.0/22 12,033 2026-10-27 09:15:48
146.20.0.0/16 11,979 2026-10-27 09:15:48
159.135.64.0/20 11,957 2026-10-27 09:15:48
69.20.0.0/17 11,910 2026-10-27 09:15:48
162.242.224.0/19 11,889 2026-10-27 09:15:48
162.242.192.0/19 11,873 2026-10-27 09:15:48
192.68.40.0/24 11,828 2026-10-27 09:15:48
172.99.64.0/19 11,814 2026-10-27 09:15:48
173.203.128.0/18 11,719 2026-10-27 09:20:18
207.97.192.0/18 11,666 2026-10-27 09:21:54
142.0.184.0/22 11,652 2026-10-27 09:19:59
204.232.224.0/19 11,586 2026-10-27 09:21:54
204.232.128.0/18 11,577 2026-10-27 09:21:54
198.210.16.0/22 11,430 2026-10-27 09:19:59
204.51.235.0/24 11,401 2026-10-27 09:19:59
156.43.59.0/24 11,392 2026-10-27 09:19:59
198.210.20.0/22 11,323 2026-10-27 09:19:59
159.135.254.0/24 11,307 2026-10-27 09:19:59
173.204.89.0/24 11,281 2026-10-27 09:19:59
204.51.224.0/24 11,273 2026-10-27 09:19:59
69.20.95.0/24 10,791 2026-10-27 09:15:48
148.62.86.0/24 3,893 2026-10-26 20:39:49
198.210.16.0/21 2,805 2026-10-26 17:59:13
173.203.184.84/32 121 2026-10-26 17:59:13
173.203.184.90/32 121 2026-10-26 17:59:13
173.203.184.91/32 120 2026-10-26 17:59:13
173.203.184.85/32 119 2026-10-26 17:59:13
173.203.184.86/32 119 2026-10-26 17:59:13
173.203.184.88/32 118 2026-10-26 17:59:13
204.232.141.25/32 117 2026-10-26 17:59:13
173.203.184.94/32 117 2026-10-26 17:59:13
173.203.184.89/32 117 2026-10-26 17:59:13
173.203.184.87/32 117 2026-10-26 17:59:13
204.232.141.24/32 117 2026-10-26 17:59:13

Showing top 50 of 54 announced prefixes by sample volume.

Frequently Asked Questions

What is AS27357?

AS27357 is an Autonomous System Number assigned to Rackspace Hosting. 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 AS27357 announce?

AS27357 announces 263.2K IPv4 addresses distributed across 40 routed CIDR prefixes. The network is registered in United States.

Who operates AS27357?

AS27357 is operated by Rackspace Hosting. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS27357 registered in?

AS27357 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-27 09:54:05 UTC
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