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.
- 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 SoftLayer
IBM Cloud is a cloud computing platform offered by the information technology company IBM that provides a suite of services including infrastructure as a service (IaaS), platform as a service (PaaS), serverless, Cloud storage, disaster recovery and backup, and managed cloud services. The IBM Cloud platform supports public cloud, private cloud, multi-cloud and hybrid cloud deployment models with an emphasis on enterprise security, governance, and regulated workloads.
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS36351 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.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 199.166.36.0/23 | AS16509, AS36351 | 2026-11-12 21:54:03 |
Network profile
Source: PeeringDB →Present at 54 internet exchanges: Equinix Chicago, Equinix Dallas, Equinix San Jose, SIX Seattle: MTU 1500, NYIIX New York, Equinix Miami, Digital Realty Atlanta, Digital Realty New York, Equinix Tokyo, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, …
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS36351 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 5.10.96.0/19 | 487,027 | 2026-11-12 21:49:37 |
| 5.83.159.0/24 | 467,470 | 2026-11-12 21:46:46 |
| 129.35.190.0/24 | 361,043 | 2026-11-12 21:41:14 |
| 67.228.252.0/23 | 288,144 | 2026-11-12 21:41:14 |
| 169.38.216.0/21 | 276,010 | 2026-11-12 21:10:46 |
| 169.38.232.0/21 | 275,442 | 2026-11-12 21:10:46 |
| 169.38.224.0/21 | 274,431 | 2026-11-12 21:10:46 |
| 13.116.64.0/18 | 273,872 | 2026-11-12 21:29:36 |
| 169.38.40.0/21 | 247,570 | 2026-11-12 21:10:46 |
| 169.38.32.0/21 | 247,075 | 2026-11-12 21:10:46 |
| 169.38.24.0/21 | 246,941 | 2026-11-12 21:10:46 |
| 75.126.112.0/20 | 218,414 | 2026-11-12 21:41:14 |
| 75.126.80.0/20 | 218,380 | 2026-11-12 21:41:14 |
| 46.16.184.0/21 | 214,440 | 2026-11-12 21:41:14 |
| 169.55.60.0/22 | 208,645 | 2026-11-12 21:41:15 |
| 108.168.254.0/23 | 205,061 | 2026-11-12 21:41:15 |
| 169.48.36.0/22 | 184,538 | 2026-11-12 21:41:15 |
| 75.126.56.0/22 | 171,235 | 2026-11-12 21:41:14 |
| 75.126.64.0/21 | 171,037 | 2026-11-12 21:41:14 |
| 75.126.48.0/21 | 170,912 | 2026-11-12 21:41:14 |
| 75.126.40.0/22 | 170,192 | 2026-11-12 21:41:14 |
| 75.126.32.0/21 | 169,936 | 2026-11-12 21:41:14 |
| 75.126.72.0/22 | 169,928 | 2026-11-12 21:41:14 |
| 69.57.140.0/22 | 165,954 | 2026-11-12 21:41:14 |
| 119.81.144.0/21 | 161,494 | 2026-11-12 21:41:14 |
| 119.81.140.0/22 | 160,273 | 2026-11-12 21:41:14 |
| 119.81.128.0/21 | 159,917 | 2026-11-12 21:41:14 |
| 198.23.96.0/21 | 159,849 | 2026-11-12 21:41:14 |
| 198.23.104.0/22 | 159,773 | 2026-11-12 21:41:14 |
| 159.253.144.0/21 | 156,625 | 2026-11-12 21:41:14 |
| 159.253.136.0/21 | 156,446 | 2026-11-12 21:41:14 |
| 169.45.0.0/20 | 156,376 | 2026-11-12 21:41:14 |
| 159.253.128.0/21 | 155,588 | 2026-11-12 21:41:14 |
| 169.45.20.0/22 | 155,286 | 2026-11-12 21:41:14 |
| 169.50.0.0/18 | 154,761 | 2026-11-12 21:41:14 |
| 158.177.64.0/18 | 154,349 | 2026-11-12 21:41:14 |
| 158.177.0.0/18 | 154,136 | 2026-11-12 21:41:14 |
| 159.122.64.0/18 | 154,112 | 2026-11-12 21:41:14 |
| 158.177.192.0/18 | 154,022 | 2026-11-12 21:41:14 |
| 158.177.128.0/18 | 154,019 | 2026-11-12 21:41:14 |
| 159.122.128.0/18 | 154,008 | 2026-11-12 21:41:14 |
| 149.81.0.0/18 | 153,946 | 2026-11-12 21:41:14 |
| 207.231.156.0/23 | 153,779 | 2026-11-12 21:41:14 |
| 185.228.36.0/22 | 153,381 | 2026-11-12 21:41:14 |
| 13.120.64.0/18 | 153,085 | 2026-11-12 21:41:14 |
| 169.38.32.0/22 | 146,200 | 2026-11-12 21:26:47 |
| 169.38.40.0/22 | 146,168 | 2026-11-12 21:21:58 |
| 169.38.36.0/22 | 145,891 | 2026-11-12 21:30:14 |
| 169.38.44.0/22 | 145,820 | 2026-11-12 21:23:29 |
| 89.144.43.0/24 | 144,554 | 2026-11-12 21:41:14 |
Showing top 50 of 513 announced prefixes by sample volume.
Frequently Asked Questions
What is AS36351?
AS36351 is an Autonomous System Number assigned to IBM Cloud. 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 AS36351 announce?
AS36351 announces 3.64M IPv4 addresses distributed across 179 routed CIDR prefixes. The network is registered in United States.
Who operates AS36351?
AS36351 is operated by IBM Cloud. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS36351 registered in?
AS36351 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
