AS6224 — CENTURYLINK-MTIPS2-CHI
AS6224 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.
About this network
CENTURYLINK-MTIPS2-CHI is the second of CenturyLink's (now Lumen's) MTIPS autonomous systems — Managed Trusted Internet Protocol Service, the GSA-contract gateway through which US federal agencies reach the public internet in compliance with the Trusted Internet Connection (TIC) initiative. The CHI suffix marks the Chicago portal; its companion is AS6223.
What it's used for
- Providing a monitored, TIC-compliant internet gateway for federal civilian agency traffic, sold under the GSA Networx and EIS contracts.
- Announces just a single /24 — 256 IPv4 addresses.
Notable
- The operator is a commercial carrier but the purpose is governmental: this space exists to front federal agency connections, not to serve CenturyLink customers in the ordinary sense.
- A /24 behind its own AS number is a deliberate, security-driven design — a small, clearly delimited perimeter is the point of a TIC access portal.
Interesting
- MTIPS gateways are geographically paired for resilience, which is why CenturyLink registered two adjacent AS numbers for the service rather than running both sites in one routing domain.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 199.254.201.0/24
Upstream networks
- AS209 CenturyLink Communications, LLC
Downstream networks
Adjacent networks
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IPv4
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED