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Autonomous System

AS27357

Rackspace Hosting

Announced IPs
262,912
CIDR prefixes
39
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 v1.2.0 — 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)
148.62.86.0/24 AS27357, AS33070 2026-09-10 12:40:45
69.20.95.0/24 AS27357, AS33070 2026-09-10 12:40:45
198.210.16.0/21 AS3356, AS27357 2026-09-10 12:40:45

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
69.20.0.0/17 32.8K
12.6%
Rackspace Hosting US
146.20.0.0/17 32.8K
1.5%
Rackspace Hosting US
146.20.128.0/17 32.8K
0.0%
Rackspace Hosting US
104.130.0.0/18 16.4K
1.3%
Rackspace Hosting US
146.20.64.0/18 16.4K
0.0%
Rackspace Hosting US
146.20.128.0/18 16.4K
2.0%
Rackspace Hosting US
162.242.192.0/18 16.4K
1.5%
Rackspace Hosting US
173.203.128.0/18 16.4K
5.3%
Rackspace Hosting US
204.232.128.0/18 16.4K
4.5%
Rackspace Hosting US
207.97.192.0/18 16.4K
6.8%
Rackspace Hosting US
23.253.128.0/19 8.2K
1.8%
Rackspace Hosting US
74.205.0.0/19 8.2K
5.1%
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
146.20.0.0/19 8.2K
0.0%
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
0.7%
Rackspace Hosting US
204.232.128.0/19 8.2K
0.0%
Rackspace Hosting US
204.232.224.0/19 8.2K
5.9%
Rackspace Hosting US Virginia Herndon
72.4.112.0/20 4.1K
16.9%
Rackspace Hosting US
104.130.224.0/20 4.1K
1.0%
Rackspace Hosting US
104.239.224.0/20 4.1K
0.8%
Rackspace Hosting US
146.20.48.0/20 4.1K
0.0%
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
204.232.160.0/20 4.1K
0.0%
Rackspace Hosting US
104.239.248.0/21 2.0K
16.4%
Rackspace Hosting US
146.20.32.0/21 2.0K
0.0%
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
204.232.176.0/21 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
96.2%
Rackspace Hosting US
146.20.44.0/22 1.0K
0.0%
Rackspace Hosting US
146.20.216.0/22 1.0K
0.0%
Rackspace Hosting US
204.232.188.0/22 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
146.20.40.0/23 512
0.0%
Rackspace Hosting US
204.232.184.0/23 512
0.0%
Rackspace Hosting US
65.61.141.0/24 256
18.0%
Rackspace Hosting US
65.61.152.0/24 256
81.3%
Rackspace Hosting US
146.20.42.0/24 256
0.0%
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
75.4%
Rackspace Hosting US
204.51.235.0/24 256
9.4%
Rackspace Hosting US
204.232.186.0/24 256
0.0%
Rackspace Hosting US
209.0.201.0/24 256
0.0%
Rackspace Hosting US
146.20.43.0/25 128
0.0%
Rackspace Hosting US
204.232.187.0/25 128
0.0%
Rackspace Hosting US
146.20.43.192/26 64
0.0%
Rackspace Hosting US
204.232.187.192/26 64
0.0%
Rackspace Hosting US
146.20.43.128/27 32
0.0%
Rackspace Hosting US
204.232.187.128/27 32
0.0%
Rackspace Hosting US
146.20.43.176/28 16
0.0%
Rackspace Hosting US
204.232.187.160/28 16
0.0%
Rackspace Hosting US
146.20.43.168/29 8
0.0%
Rackspace Hosting US
204.232.187.176/29 8
0.0%
Rackspace Hosting US
204.232.187.184/29 8
0.0%
Rackspace Hosting IN
146.20.43.160/30 4
0.0%
Rackspace Hosting US
146.20.43.164/30 4
0.0%
Rackspace Hosting GB

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 9,577 2026-09-10 12:04:21
104.239.224.0/20 8,173 2026-09-10 12:04:47
162.209.96.0/19 8,084 2026-09-10 12:04:47
104.130.160.0/19 8,064 2026-09-10 12:04:47
23.253.128.0/19 8,058 2026-09-10 12:04:47
104.239.160.0/19 8,057 2026-09-10 12:04:47
72.4.112.0/20 8,051 2026-09-10 12:04:47
104.239.248.0/21 8,044 2026-09-10 12:04:47
74.205.0.0/19 8,037 2026-09-10 12:04:47
65.61.141.0/24 8,036 2026-09-10 12:04:47
69.20.0.0/17 8,028 2026-09-10 12:04:47
65.61.142.0/23 8,019 2026-09-10 12:04:47
65.61.186.0/23 8,019 2026-09-10 12:04:47
65.61.152.0/24 8,015 2026-09-10 12:04:47
104.130.0.0/18 8,011 2026-09-10 12:04:47
65.61.146.0/23 8,007 2026-09-10 12:04:47
159.135.64.0/20 7,994 2026-09-10 12:04:47
104.130.224.0/20 7,994 2026-09-10 12:04:47
146.20.0.0/16 7,975 2026-09-10 12:04:47
104.130.120.0/22 7,960 2026-09-10 12:04:47
162.242.224.0/19 7,929 2026-09-10 12:04:47
162.242.192.0/19 7,917 2026-09-10 12:04:47
192.68.40.0/24 7,888 2026-09-10 12:04:47
173.203.128.0/18 7,879 2026-09-10 12:04:47
172.99.64.0/19 7,873 2026-09-10 12:04:47
142.0.184.0/22 7,806 2026-09-10 12:04:21
207.97.192.0/18 7,789 2026-09-10 12:04:47
204.232.224.0/19 7,729 2026-09-10 12:04:47
204.232.128.0/18 7,728 2026-09-10 12:04:47
198.210.16.0/22 7,675 2026-09-10 12:04:47
156.43.59.0/24 7,607 2026-09-10 12:04:47
198.210.20.0/22 7,600 2026-09-10 12:04:47
159.135.254.0/24 7,569 2026-09-10 12:04:47
204.51.235.0/24 7,559 2026-09-10 12:04:47
173.204.89.0/24 7,554 2026-09-10 12:04:47
204.51.224.0/24 7,534 2026-09-10 12:04:47
69.20.95.0/24 7,507 2026-09-10 12:04:47
198.210.16.0/21 1,795 2026-09-10 10:56:24
148.62.86.0/24 776 2026-09-10 12:04:21
173.203.184.84/32 92 2026-09-10 07:12:12
173.203.184.86/32 90 2026-09-05 00:01:03
173.203.184.85/32 90 2026-09-05 00:01:03
173.203.184.90/32 90 2026-09-05 00:01:03
173.203.184.91/32 89 2026-09-05 00:01:03
173.203.184.88/32 89 2026-09-05 00:01:03
173.203.184.89/32 88 2026-09-05 00:01:03
204.232.141.25/32 88 2026-09-05 00:01:03
173.203.184.94/32 88 2026-09-05 00:01:03
173.203.184.93/32 88 2026-09-05 00:01:03
173.203.184.87/32 88 2026-09-05 00:01:03

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 262.9K IPv4 addresses distributed across 39 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: 2026-09-10 12:39:05 UTC
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