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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 v1.2.1 — 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 2026-10-14 21:44:05
148.62.86.0/24 AS27357, AS33070 2026-10-14 21:44:05
198.210.16.0/21 AS3356, AS27357 2026-10-14 08:29:00

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
13.0%
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
6.3%
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
1.2%
Rackspace Hosting US — —
104.239.160.0/19 8.2K
1.1%
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
16.9%
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
6.0%
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
3.9%
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
99.2%
Rackspace Hosting US — —
146.20.216.0/22 1.0K
0.0%
Rackspace Hosting US — —
65.61.142.0/23 512
2.0%
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
98.4%
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 14,057 2026-10-14 21:32:01
23.253.128.0/19 11,472 2026-10-14 21:31:54
104.239.224.0/20 11,403 2026-10-14 21:31:50
72.4.112.0/20 11,207 2026-10-14 21:31:50
65.61.141.0/24 11,184 2026-10-14 21:31:50
65.61.186.0/23 11,183 2026-10-14 21:31:50
162.209.96.0/19 11,178 2026-10-14 21:31:57
65.61.152.0/24 11,175 2026-10-14 21:31:50
65.61.142.0/23 11,170 2026-10-14 21:31:50
65.61.146.0/23 11,155 2026-10-14 21:31:50
74.205.0.0/19 11,152 2026-10-14 21:31:50
104.239.160.0/19 11,144 2026-10-14 21:31:50
104.130.160.0/19 11,143 2026-10-14 21:31:50
104.239.248.0/21 11,122 2026-10-14 21:31:50
104.130.0.0/18 11,104 2026-10-14 21:31:50
104.130.224.0/20 11,078 2026-10-14 21:31:50
104.130.120.0/22 11,046 2026-10-14 21:31:50
146.20.0.0/16 10,992 2026-10-14 21:31:50
159.135.64.0/20 10,973 2026-10-14 21:31:57
69.20.0.0/17 10,919 2026-10-14 21:31:50
162.242.224.0/19 10,909 2026-10-14 21:31:57
162.242.192.0/19 10,890 2026-10-14 21:31:57
192.68.40.0/24 10,857 2026-10-14 21:31:50
172.99.64.0/19 10,827 2026-10-14 21:31:57
142.0.184.0/22 10,761 2026-10-14 21:31:50
173.203.128.0/18 10,735 2026-10-14 21:31:57
207.97.192.0/18 10,721 2026-10-14 21:31:44
204.232.128.0/18 10,644 2026-10-14 21:31:44
204.232.224.0/19 10,643 2026-10-14 21:31:44
198.210.16.0/22 10,561 2026-10-14 21:31:50
156.43.59.0/24 10,506 2026-10-14 21:31:59
204.51.235.0/24 10,503 2026-10-14 21:31:44
198.210.20.0/22 10,467 2026-10-14 21:31:50
159.135.254.0/24 10,431 2026-10-14 21:31:59
204.51.224.0/24 10,409 2026-10-14 21:31:44
173.204.89.0/24 10,406 2026-10-14 21:31:50
69.20.95.0/24 10,015 2026-10-14 21:31:50
198.210.16.0/21 2,751 2026-10-13 08:39:56
148.62.86.0/24 2,207 2026-10-14 21:31:50
173.203.184.84/32 110 2026-10-10 13:42:15
173.203.184.86/32 108 2026-10-10 13:42:15
173.203.184.85/32 108 2026-10-10 13:42:15
173.203.184.90/32 108 2026-10-10 13:42:15
173.203.184.91/32 107 2026-10-10 13:42:15
173.203.184.88/32 107 2026-10-10 13:42:15
173.203.184.89/32 106 2026-10-10 13:42:15
204.232.141.25/32 106 2026-10-10 13:42:15
173.203.184.94/32 106 2026-10-10 13:42:15
173.203.184.93/32 106 2026-10-10 13:42:15
173.203.184.87/32 106 2026-10-10 13:42:15

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: 2026-10-14 21:39:05 UTC
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