AS40399
Masergy Cloud Communications, Inc.
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
- Hosting allocation −6
- Trust score 59 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 208.75.12.0/22 | 1.0K |
0.0%
|
Masergy Cloud Communications, Inc. | US | — | — |
| 208.75.8.0/23 | 512 |
0.0%
|
Masergy Cloud Communications, Inc. | US | — | — |
| 208.75.11.0/24 | 256 |
0.0%
|
Masergy Cloud Communications, Inc. | US | — | — |
| 208.75.12.0/24 | 256 |
0.0%
|
Masergy Cloud Communications, Inc. | GB | England | Poplar |
| 208.75.13.0/24 | 256 |
0.0%
|
Masergy Cloud Communications, Inc. | JP | Tokyo | Tokyo |
| 208.75.14.0/24 | 256 |
0.0%
|
Masergy Cloud Communications, Inc. | AU | New South Wales | Sydney |
| 208.75.15.0/24 | 256 |
0.0%
|
Masergy Cloud Communications, Inc. | NL | North Holland | Amsterdam |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS40399 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 |
|---|---|---|
| 208.75.14.0/24 | 17,978 | 2026-08-03 13:04:53 |
| 208.75.13.0/24 | 12,147 | 2026-08-03 13:15:08 |
| 208.75.9.0/24 | 5,830 | 2026-08-03 13:05:41 |
| 208.75.12.0/24 | 5,774 | 2026-08-03 13:05:41 |
| 208.75.11.0/24 | 5,676 | 2026-08-03 13:05:41 |
| 208.75.15.0/24 | 5,641 | 2026-08-03 13:05:41 |
| 208.75.8.0/24 | 5,638 | 2026-08-03 13:05:41 |
Frequently Asked Questions
What is AS40399?
AS40399 is an Autonomous System Number assigned to Masergy Cloud Communications, Inc.. 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 AS40399 announce?
AS40399 announces 1.8K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in United Kingdom.
Who operates AS40399?
AS40399 is operated by Masergy Cloud Communications, Inc.. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.
What country is AS40399 registered in?
AS40399 is registered in United Kingdom. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
