AS100
FMC Central Engineering Laboratories
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
- Multiple-origin (MOAS) routing anomaly −12
- Trust score 53 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 5 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS100 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) |
|---|---|---|
| 216.225.27.0/24 | AS100, AS46301 | 2026-07-18 11:37:44 |
| 101.245.70.0/24 | AS100, AS55990 | 2026-07-17 15:52:36 |
| 101.245.68.0/24 | AS100, AS55990 | 2026-07-17 14:37:36 |
| 101.245.66.0/24 | AS100, AS55990 | 2026-07-17 12:37:35 |
| 101.245.65.0/24 | AS100, AS55990 | 2026-07-17 10:22:34 |
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 12.30.153.0/24 | 256 |
0.4%
|
FMC Central Engineering Laboratories | US | Texas | Richmond |
| 74.123.89.0/24 | 256 |
82.0%
|
FMC Central Engineering Laboratories | US | — | — |
| 102.210.158.0/24 | 256 |
0.0%
|
FMC Central Engineering Laboratories | BW | — | — |
| 192.118.48.0/24 | 256 |
0.0%
|
FMC Central Engineering Laboratories | IL | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS100 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 |
|---|---|---|
| 102.210.158.0/24 | 22,828 | 2026-07-18 10:52:00 |
| 12.30.153.0/24 | 10,697 | 2026-07-18 10:52:13 |
| 38.22.219.0/24 | 6,408 | 2026-07-18 10:12:50 |
| 216.225.27.0/24 | 4,407 | 2026-07-18 10:12:50 |
| 192.118.48.0/24 | 4,038 | 2026-07-18 10:52:28 |
| 199.36.118.0/24 | 3,941 | 2026-07-13 06:46:32 |
| 159.138.203.215/32 | 8 | 2026-06-24 13:29:01 |
| 113.45.98.0/24 | 7 | 2026-07-16 03:26:58 |
| 74.123.89.0/24 | 5 | 2026-06-14 15:29:50 |
| 101.245.101.0/24 | 5 | 2026-07-14 14:39:52 |
| 101.245.105.0/24 | 2 | 2026-07-14 21:28:17 |
| 101.245.104.0/24 | 2 | 2026-07-14 20:42:34 |
| 101.245.106.0/24 | 2 | 2026-07-14 22:01:18 |
| 101.245.102.0/24 | 2 | 2026-07-14 17:30:40 |
| 101.245.103.0/24 | 2 | 2026-07-14 19:40:03 |
| 101.245.98.0/24 | 1 | 2026-07-12 13:21:35 |
| 101.245.65.0/24 | 1 | 2026-07-16 10:29:14 |
| 101.245.67.0/24 | 1 | 2026-07-16 14:30:40 |
| 101.245.70.0/24 | 1 | 2026-07-16 16:00:58 |
| 101.245.68.0/24 | 1 | 2026-07-16 14:39:57 |
| 101.245.69.0/24 | 1 | 2026-07-16 14:48:11 |
| 101.245.110.0/24 | 1 | 2026-07-15 05:42:49 |
| 101.245.66.0/24 | 1 | 2026-07-16 12:42:53 |
| 101.245.111.0/24 | 1 | 2026-07-15 06:41:53 |
| 101.245.107.0/24 | 1 | 2026-07-15 01:01:55 |
Frequently Asked Questions
What is AS100?
AS100 is an Autonomous System Number assigned to FMC Central Engineering Laboratories. 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 AS100 announce?
AS100 announces 1.0K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in United States.
Who operates AS100?
AS100 is operated by FMC Central Engineering Laboratories. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS100 registered in?
AS100 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
