Quest Diagnostics, Inc.
Data as of 2026-08-30
BGP inherited
Cluster stats
| Netblocks | 21 · 72,200 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a00:2381:1f43::/48) |
| Registered in | United States (19) · India (2) |
| Cluster ID | 232274785 |
| Registry | APNIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 15 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
10 weekly snapshots · JSON
22
-8 netblocks since 2026-07-05
2026-07-05
peak 30
2026-08-30
IP Ranges (21)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 65.199.254.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 156.30.0.0/16 | Quest Diagnostics, Inc. | ARIN | DIRECT ALLOCATION | ● high |
| 156.30.5.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 156.30.24.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 204.235.142.0/23 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 209.242.240.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 209.242.241.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 209.242.247.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 209.242.248.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 209.242.250.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 209.242.251.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 216.195.72.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 216.203.80.0/20 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 216.203.80.0/21 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 216.203.80.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 216.203.87.0/24 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 216.203.88.0/21 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 216.203.92.0/22 | Quest Diagnostics, Inc. | BGP | ANNOUNCED | ● high |
| 122.160.118.152/30 | QUEST_DIAGNOSTICS | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 122.160.248.192/30 | QUEST_DIAGNOSTICS | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 2a00:2381:1f43::/48 | QUEST-DIAGNOSTICS | RIPE | AGGREGATED-BY-LIR | ● low |
IPv6 ranges (1)
| CIDR |
|---|
| 2a00:2381:1f43::/48 |
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: F
how networks compare →
13.6%
of checked blocks have valid RPKI ROA coverage
(3 of 22)
Possible discrepancies (1)
These blocks are registered to Quest Diagnostics, Inc. but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2a00:2381:1f43::/48 /48 | authorized for AS2856 — British Telecommunications Limited |
NIC Handles
AS27021
BTNET-MNT
DEL2-AP
DEL2-AP
DUMY-RIPE
DUMY-RIPE
MAINT-IN-TELEMEDIA
MONAC4-ARIN
MONAC4-ARIN
MONAC4-ARIN
QDT-ARIN
QDT-ARIN
+3 more