AS5738
FirstLight Fiber, 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
- Multiple-origin (MOAS) routing anomaly −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 2 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS5738 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) |
|---|---|---|
| 167.244.247.0/24 | AS5738, AS13536 | 2026-07-18 12:37:44 |
| 167.244.244.0/24 | AS5738, AS13536 | 2026-07-18 12:07:44 |
Network profile
Source: PeeringDB →AS5738 — global IP footprint
Cities where AS5738 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS5738 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 |
|---|---|---|
| 64.17.96.0/19 | 5,395 | 2026-07-18 12:15:48 |
| 216.114.128.0/18 | 5,344 | 2026-07-18 12:19:36 |
| 209.198.64.0/18 | 5,340 | 2026-07-18 12:24:40 |
| 207.136.192.0/18 | 5,336 | 2026-07-18 12:18:16 |
| 72.15.0.0/19 | 5,192 | 2026-07-18 12:29:58 |
| 207.136.250.0/24 | 14 | 2026-07-14 17:27:42 |
| 207.136.247.0/24 | 14 | 2026-07-14 17:27:42 |
| 207.136.245.0/24 | 14 | 2026-07-14 17:27:42 |
| 209.198.70.0/24 | 13 | 2026-07-14 17:27:42 |
| 209.198.66.0/24 | 13 | 2026-07-14 17:27:42 |
| 72.15.1.0/24 | 13 | 2026-07-14 17:27:42 |
| 209.198.93.0/24 | 13 | 2026-07-14 17:27:42 |
| 72.0.158.0/24 | 13 | 2026-07-14 17:27:42 |
| 167.244.244.0/24 | 13 | 2026-07-14 17:27:42 |
| 143.66.0.0/16 | 12 | 2026-07-13 12:55:16 |
| 66.44.224.0/24 | 12 | 2026-07-13 12:55:16 |
| 150.155.124.0/22 | 12 | 2026-07-13 12:55:16 |
| 192.245.19.0/24 | 12 | 2026-07-13 12:55:16 |
| 192.245.20.0/22 | 12 | 2026-07-13 12:55:16 |
| 216.114.157.0/24 | 11 | 2026-07-13 12:55:16 |
| 143.67.0.0/16 | 11 | 2026-07-13 12:55:16 |
| 204.27.229.0/24 | 11 | 2026-07-13 12:55:16 |
| 192.76.175.0/24 | 10 | 2026-07-13 12:55:16 |
| 209.198.82.0/24 | 9 | 2026-07-14 17:27:42 |
| 167.244.247.0/24 | 7 | 2026-07-16 07:47:16 |
| 207.136.194.0/24 | 2 | 2026-07-14 17:27:38 |
| 216.114.146.0/24 | 1 | 2026-07-14 17:27:38 |
| 216.114.184.0/23 | 1 | 2026-07-14 17:27:38 |
Frequently Asked Questions
What is AS5738?
AS5738 is an Autonomous System Number assigned to FirstLight Fiber, 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 AS5738 announce?
AS5738 announces 59.6K IPv4 addresses distributed across 55 routed CIDR prefixes. The network is registered in United States.
Who operates AS5738?
AS5738 is operated by FirstLight Fiber, Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS5738 registered in?
AS5738 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
