AS14921
CenturyLink Communications, LLC
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
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About Qwest
Qwest Communications International, Inc. was a United States telecommunications carrier.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS14921 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 |
|---|---|---|
| 63.165.119.0/24 | 5,393 | 2026-07-18 11:59:59 |
| 69.68.252.0/22 | 5,373 | 2026-07-18 11:59:59 |
| 74.4.176.0/21 | 5,336 | 2026-07-18 11:59:59 |
| 69.69.94.0/23 | 5,331 | 2026-07-18 11:59:59 |
| 67.237.132.0/22 | 5,319 | 2026-07-18 11:59:59 |
| 71.0.48.0/21 | 5,316 | 2026-07-18 11:59:59 |
| 205.162.192.0/20 | 5,312 | 2026-07-18 11:59:59 |
| 71.2.216.0/22 | 5,311 | 2026-07-18 11:59:59 |
| 67.235.48.0/23 | 5,309 | 2026-07-18 11:59:59 |
| 138.210.120.0/22 | 5,292 | 2026-07-18 11:59:59 |
| 71.50.0.0/20 | 5,258 | 2026-07-18 11:59:59 |
| 67.76.144.0/21 | 5,256 | 2026-07-18 11:59:59 |
| 65.40.220.0/22 | 5,253 | 2026-07-18 11:59:59 |
| 71.53.64.0/21 | 5,250 | 2026-07-18 11:59:59 |
| 76.2.0.0/20 | 5,225 | 2026-07-18 11:59:59 |
| 67.237.136.0/22 | 5,220 | 2026-07-18 11:59:59 |
| 67.235.50.0/23 | 5,218 | 2026-07-18 11:59:59 |
| 65.40.224.0/22 | 5,212 | 2026-07-18 11:59:59 |
| 67.232.160.0/21 | 5,206 | 2026-07-18 11:59:59 |
| 138.210.82.0/24 | 5,190 | 2026-07-18 11:59:59 |
| 138.210.128.0/22 | 5,183 | 2026-07-18 11:59:59 |
| 76.2.24.0/21 | 5,177 | 2026-07-18 11:59:59 |
| 67.237.96.0/20 | 5,173 | 2026-07-18 11:59:59 |
| 76.2.16.0/21 | 5,173 | 2026-07-18 11:59:59 |
| 67.237.140.0/22 | 5,162 | 2026-07-18 11:59:59 |
| 69.34.216.0/22 | 5,118 | 2026-07-18 11:59:59 |
| 138.210.78.0/23 | 5,117 | 2026-07-18 11:59:59 |
| 71.1.132.0/22 | 5,114 | 2026-07-18 11:59:59 |
| 71.48.176.0/21 | 5,111 | 2026-07-18 11:59:59 |
| 65.40.176.0/21 | 5,110 | 2026-07-18 11:59:59 |
| 71.1.128.0/22 | 5,099 | 2026-07-18 11:59:59 |
| 138.210.168.0/21 | 5,070 | 2026-07-18 11:59:59 |
| 67.237.224.0/19 | 4,245 | 2026-07-18 12:00:03 |
| 71.53.72.0/21 | 4,213 | 2026-07-18 12:00:03 |
Frequently Asked Questions
What is AS14921?
AS14921 is an Autonomous System Number assigned to CenturyLink Communications, LLC. 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 AS14921 announce?
AS14921 announces 67.3K IPv4 addresses distributed across 36 routed CIDR prefixes. The network is registered in United States.
Who operates AS14921?
AS14921 is operated by CenturyLink Communications, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS14921 registered in?
AS14921 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
