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 →
About Quantcast
Quantcast is an American technology company, founded in 2006, that specializes in advertising, audience insights and measurement. It has offices in the United States, Canada, Australia, Singapore, United Kingdom, Ireland, France, Germany, Italy, and Sweden.
⚠ 11 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS27281 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) |
|---|---|---|
| 192.184.69.0/24 | AS16509, AS27281 | 2026-07-18 09:07:43 |
| 192.184.67.0/24 | AS16509, AS27281 | 2026-07-18 09:07:43 |
| 103.229.9.0/24 | AS16509, AS27281 | 2026-07-18 09:07:43 |
| 192.184.71.0/24 | AS16509, AS27281 | 2026-07-18 09:07:43 |
| 91.228.74.0/24 | AS16509, AS27281 | 2026-07-18 09:07:43 |
| 192.184.70.0/24 | AS16509, AS27281 | 2026-07-18 09:07:43 |
| 192.184.68.0/24 | AS14618, AS27281 | 2026-07-18 09:07:43 |
| 103.229.10.0/24 | AS16509, AS27281 | 2026-07-17 19:22:38 |
| 103.229.8.0/24 | AS16509, AS27281 | 2026-07-17 19:22:38 |
| 192.184.72.0/24 | AS14618, AS27281 | 2026-07-17 19:22:38 |
| 91.228.72.0/24 | AS16509, AS27281 | 2026-07-17 19:22:38 |
Network profile
Source: PeeringDB →Present at 5 internet exchanges: Equinix Singapore, Equinix Ashburn, Equinix San Jose, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, SIX Seattle: MTU 1500
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 192.184.74.0/23 | 512 |
0.0%
|
Quantcast Corporation | US | — | — |
| 192.184.76.0/23 | 512 |
0.0%
|
Quantcast Corporation | US | — | — |
| 103.229.11.0/24 | 256 |
0.0%
|
Quantcast Corporation | SG | — | — |
| 192.184.74.0/24 | 256 |
0.0%
|
— | DE | — | — |
| 192.184.75.0/24 | 256 |
0.0%
|
— | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS27281 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 |
|---|---|---|
| 192.184.76.0/24 | 5,427 | 2026-07-18 08:50:02 |
| 192.184.74.0/24 | 4,519 | 2026-07-18 08:47:57 |
| 192.184.75.0/24 | 4,395 | 2026-07-18 08:47:55 |
| 192.184.77.0/24 | 3,949 | 2026-07-18 08:47:54 |
| 103.229.11.0/24 | 2,940 | 2026-07-18 09:05:02 |
| 192.184.69.0/24 | 1,932 | 2026-07-18 04:31:08 |
| 192.184.70.0/24 | 1,930 | 2026-07-18 04:31:08 |
| 192.184.67.0/24 | 1,929 | 2026-07-18 04:31:08 |
| 192.184.72.0/24 | 1,391 | 2026-07-18 04:31:08 |
| 192.184.73.0/24 | 1,390 | 2026-07-18 04:31:08 |
| 192.184.68.0/24 | 1,389 | 2026-07-18 04:31:08 |
| 192.184.71.0/24 | 190 | 2026-07-18 01:13:58 |
| 91.228.74.0/24 | 189 | 2026-07-18 01:13:51 |
| 91.228.72.0/24 | 189 | 2026-07-18 01:13:51 |
| 103.229.10.0/24 | 183 | 2026-07-18 09:09:26 |
| 103.229.8.0/24 | 183 | 2026-07-18 09:09:26 |
| 103.229.9.0/24 | 183 | 2026-07-18 09:09:26 |
Frequently Asked Questions
What is AS27281?
AS27281 is an Autonomous System Number assigned to Quantcast Corporation. 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 AS27281 announce?
AS27281 announces 1.3K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in United States.
Who operates AS27281?
AS27281 is operated by Quantcast Corporation. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS27281 registered in?
AS27281 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
