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 Telephone and Data Systems
Telephone and Data Systems, Inc. is an American telecommunications service company primarily providing broadband, cable, telephone, and wireless services, and radio tower leasing, through its subsidiaries TDS Telecom and Array Digital Infrastructure, the latter of which was formerly the cell phone company United States Cellular.
Network profile
Source: PeeringDB →Present at 9 internet exchanges: Equinix Chicago, MadIX, Digital Realty Atlanta, MICE: Shared Peering, Equinix Ashburn, Any2West, SIX Seattle: MTU 1500, SUPRnet: SUPRnet, IX-Denver: IX-Denver Fabric
Web3 footprint
AS4181 hosts 2 observed decentralized-network nodes across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.
AS4181 — global IP footprint
Cities where AS4181 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 AS4181 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 |
|---|---|---|
| 192.154.94.0/24 | 8,441 | 2026-07-18 12:00:00 |
| 139.135.0.0/19 | 7,198 | 2026-07-18 12:00:00 |
| 24.49.160.0/20 | 5,830 | 2026-07-18 11:59:13 |
| 24.56.176.0/22 | 5,825 | 2026-07-18 11:59:13 |
| 24.54.184.0/21 | 5,821 | 2026-07-18 11:59:13 |
| 24.236.52.0/22 | 5,815 | 2026-07-18 11:59:13 |
| 24.54.128.0/20 | 5,814 | 2026-07-18 11:59:13 |
| 24.54.168.0/22 | 5,814 | 2026-07-18 11:59:13 |
| 24.54.164.0/23 | 5,814 | 2026-07-18 11:59:13 |
| 24.52.8.0/22 | 5,811 | 2026-07-18 11:59:13 |
| 24.52.18.0/23 | 5,810 | 2026-07-18 11:59:13 |
| 24.49.96.0/20 | 5,809 | 2026-07-18 11:59:13 |
| 24.52.32.0/22 | 5,808 | 2026-07-18 11:59:13 |
| 24.40.80.0/20 | 5,807 | 2026-07-18 11:59:13 |
| 24.236.32.0/21 | 5,806 | 2026-07-18 11:59:13 |
| 24.52.0.0/21 | 5,806 | 2026-07-18 11:59:13 |
| 24.54.160.0/22 | 5,806 | 2026-07-18 11:59:13 |
| 24.56.160.0/22 | 5,805 | 2026-07-18 11:59:13 |
| 24.75.192.0/21 | 5,804 | 2026-07-18 11:59:13 |
| 24.54.148.0/23 | 5,804 | 2026-07-18 11:59:13 |
| 24.49.128.0/20 | 5,803 | 2026-07-18 11:59:13 |
| 24.56.170.0/23 | 5,803 | 2026-07-18 11:59:13 |
| 24.52.20.0/22 | 5,803 | 2026-07-18 11:59:13 |
| 24.54.180.0/22 | 5,802 | 2026-07-18 11:59:13 |
| 24.56.188.0/23 | 5,801 | 2026-07-18 11:59:13 |
| 24.56.180.0/23 | 5,797 | 2026-07-18 11:59:13 |
| 24.54.144.0/22 | 5,796 | 2026-07-18 11:59:13 |
| 24.224.64.0/18 | 5,769 | 2026-07-18 11:59:13 |
| 40.161.0.0/16 | 5,763 | 2026-07-18 11:59:13 |
| 50.21.192.0/20 | 5,715 | 2026-07-18 11:59:13 |
| 64.17.76.0/22 | 5,685 | 2026-07-18 11:59:13 |
| 64.35.192.0/20 | 5,674 | 2026-07-18 11:59:13 |
| 64.17.80.0/20 | 5,672 | 2026-07-18 11:59:13 |
| 64.17.68.0/22 | 5,671 | 2026-07-18 11:59:13 |
| 64.83.160.0/19 | 5,669 | 2026-07-18 11:59:13 |
| 64.50.224.0/19 | 5,668 | 2026-07-18 11:59:13 |
| 64.17.72.0/23 | 5,664 | 2026-07-18 11:59:13 |
| 66.220.96.0/19 | 5,650 | 2026-07-18 11:59:13 |
| 66.222.0.0/17 | 5,642 | 2026-07-18 11:59:13 |
| 69.11.128.0/17 | 5,636 | 2026-07-18 12:00:00 |
| 67.217.16.0/23 | 5,634 | 2026-07-18 11:59:13 |
| 67.204.128.0/18 | 5,632 | 2026-07-18 11:59:13 |
| 66.173.0.0/17 | 5,630 | 2026-07-18 11:59:13 |
| 67.217.8.0/21 | 5,626 | 2026-07-18 11:59:13 |
| 68.71.160.0/19 | 5,626 | 2026-07-18 12:00:00 |
| 72.0.160.0/19 | 5,603 | 2026-07-18 12:00:00 |
| 69.21.0.0/16 | 5,595 | 2026-07-18 12:00:00 |
| 74.211.64.0/19 | 5,562 | 2026-07-18 12:00:00 |
| 75.100.0.0/16 | 5,561 | 2026-07-18 12:00:00 |
| 74.211.0.0/18 | 5,559 | 2026-07-18 12:00:00 |
Showing top 50 of 585 announced prefixes by sample volume.
Frequently Asked Questions
What is AS4181?
AS4181 is an Autonomous System Number assigned to TDS TELECOM. 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 AS4181 announce?
AS4181 announces 1.74M IPv4 addresses distributed across 2,460 routed CIDR prefixes. The network is registered in United States.
Who operates AS4181?
AS4181 is operated by TDS TELECOM. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS4181 registered in?
AS4181 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
