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Autonomous System

AS11277

NiSource Corporate Services Company

Announced IPs
1,792
CIDR prefixes
4
ASN
AS11277

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.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS11277 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
199.48.4.0/22 4,672 2026-07-31 02:27:50
205.166.166.0/24 4,631 2026-07-31 02:27:50
198.62.227.0/24 4,561 2026-07-31 02:27:45
204.75.176.0/24 4,555 2026-07-31 02:27:45

Frequently Asked Questions

What is AS11277?

AS11277 is an Autonomous System Number assigned to NiSource Corporate Services Company. 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 AS11277 announce?

AS11277 announces 1.8K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in United States.

Who operates AS11277?

AS11277 is operated by NiSource Corporate Services Company. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS11277 registered in?

AS11277 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: 2026-07-31 02:40:31 UTC
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