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Autonomous System

AS5778

CenturyLink Communications, LLC

Announced IPs
1,792
CIDR prefixes
7
ASN
AS5778

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.

70/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Isp allocation +5
  • Trust score 70 / 100

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

About Qwest

Qwest Communications International, Inc. was a United States telecommunications carrier.

Founded
1995
Headquarters
Denver
Industry
telecommunications
Parent
Lumen Technologies

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS5778 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
67.239.160.0/19 7,983 2026-08-31 18:59:34
67.239.128.0/20 7,965 2026-08-31 18:59:34
67.76.32.0/20 7,961 2026-08-31 18:59:34
71.1.16.0/20 7,942 2026-08-31 18:59:34
74.4.224.0/21 7,925 2026-08-31 18:20:03
67.76.46.0/24 7,920 2026-08-31 18:20:03
63.168.58.0/24 7,914 2026-08-31 18:59:34
207.43.191.0/24 7,910 2026-08-31 18:24:03
69.68.176.0/21 7,909 2026-08-31 18:59:34
76.7.64.0/20 7,909 2026-08-31 18:59:34
67.238.80.0/20 7,907 2026-08-31 18:59:34
67.77.208.0/20 7,903 2026-08-31 18:59:34
67.76.96.0/21 7,903 2026-08-31 18:59:34
67.239.144.0/21 7,901 2026-08-31 18:59:34
65.167.193.0/24 7,899 2026-08-31 18:20:03
63.165.148.0/24 7,898 2026-08-31 18:20:03
67.76.224.0/21 7,896 2026-08-31 18:59:34
69.34.40.0/21 7,895 2026-08-31 18:59:34
69.69.48.0/20 7,892 2026-08-31 18:59:34
207.43.190.0/24 7,891 2026-08-31 18:24:03
71.2.30.0/23 7,889 2026-08-31 18:20:03
69.69.176.0/21 7,886 2026-08-31 18:59:34
65.41.232.0/22 7,885 2026-08-31 18:59:34
63.162.197.0/24 7,883 2026-08-31 18:59:34
69.69.208.0/21 7,880 2026-08-31 18:59:34
69.68.232.0/21 7,880 2026-08-31 18:59:34
65.162.200.0/22 7,880 2026-08-31 18:59:34
65.174.122.0/24 7,878 2026-08-31 18:20:03
64.45.240.0/21 7,877 2026-08-31 18:59:34
71.48.192.0/19 7,877 2026-08-31 18:59:34
69.68.216.0/21 7,875 2026-08-31 18:59:34
71.1.208.0/20 7,874 2026-08-31 18:59:34
63.165.144.0/20 7,869 2026-08-31 18:59:34
69.34.68.0/22 7,865 2026-08-31 18:59:34
71.2.232.0/21 7,865 2026-08-31 18:59:34
69.34.124.0/22 7,861 2026-08-31 18:59:34
67.77.48.0/21 7,857 2026-08-31 18:59:34
67.237.64.0/20 7,857 2026-08-31 18:59:34
67.77.128.0/20 7,857 2026-08-31 18:59:34
69.34.120.0/22 7,852 2026-08-31 18:59:34
67.77.0.0/20 7,852 2026-08-31 18:59:34
65.41.252.0/22 7,851 2026-08-31 18:59:34
65.41.32.0/20 7,850 2026-08-31 18:59:34
67.77.224.0/20 7,848 2026-08-31 18:59:34
67.76.104.0/21 7,848 2026-08-31 18:59:34
69.68.64.0/19 7,848 2026-08-31 18:59:34
69.69.216.0/21 7,843 2026-08-31 18:59:34
65.40.104.0/21 7,840 2026-08-31 18:59:34
71.2.16.0/20 7,838 2026-08-31 18:59:34
71.0.176.0/20 7,834 2026-08-31 18:59:34

Showing top 50 of 141 announced prefixes by sample volume.

Frequently Asked Questions

What is AS5778?

AS5778 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 AS5778 announce?

AS5778 announces 1.8K IPv4 addresses distributed across 7 routed CIDR prefixes. The network is registered in United States.

Who operates AS5778?

AS5778 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 AS5778 registered in?

AS5778 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-19 03:54:05 UTC
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