AS11577 — ADS-ASN

AS11577 announces 2 IPv4 prefixes covering 131,072 addresses and 0 IPv6 prefixes.

About this network

ADS-ASN belongs to the Vermont Agency of Digital Services, the State of Vermont's central IT agency. It carries the state government's own network, historically known as GOVnet.

What it's used for

Every piece of evidence points the same way. RIS shows 7 announced IPv4 prefixes and 131,072 addresses with only 3 observed neighbours — two /16s (170.222.0.0/16 and 159.105.0.0/16) plus the /17 and /24 deaggregates a network announces for traffic engineering or to protect against hijack. Every single prefix is registered to the Vermont Agency of Digital Services itself, under the netnames GOVNET-VT-US and VTADSNET. There are no third-party registrants at all, which rules out the IP-leasing shape outright.

Sampled reverse DNS closes it: 159.105.0.5 resolves to rsa.cag.state.vt.us — a host in the state.vt.us zone, the State of Vermont's own domain. That is what the space carries: state agency systems, not customers.

Two /16s against three neighbours is the classic public-sector enterprise silhouette. A network this size that peered with hundreds of ASes would be a carrier; peering with a handful means it buys transit and serves one organisation.

Notable

Agency of Digital Services consolidated Vermont's state IT under one roof, so this AS is the routing home for state departments generally rather than any single department. It is a government network by holder, by registration and by what the addresses actually carry — a rare case where all three agree.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 159.105.0.0/16
• 170.222.0.0/16

Upstream networks

• AS55002 F5, Inc.
• AS13536 FirstLight Fiber, Inc.
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS55002 F5, Inc.
• AS13536 FirstLight Fiber, Inc.
• AS3356 Level 3 Parent, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 7 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.
• Listed in as-sets: AS-F5, AS-HURRICANE, AS-TRANSROUTE-SPEC, AS-UVM, AS-UVM-VT, AS1221:AS-CUSTOMERS, AS17356:AS-STATE-OF-VERMONT, AS17356:AS-STATE-OF-VERMONT, AS35280:AS-F5, AS5738:AS-CUSTOMERS.