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Summary IP address summary information Name
NORTHWESTERN CORPORATION Country
Website
Hosted domains
0 IPv4 addresses
768 IPv6 addresses
0 ASN type
Business Registry
ARIN Allocated
26 years ago on Mar 27, 2000 Updated
14 years ago on Mar 2, 2012
WHOIS
ASHandle: █████
OrgID: █████
ASName: ██████
ASNumber: AS█████
RegDate: ████-██-██
Updated: ████-██-██
TechHandle: ████-████
Source: ████
Powered by ASN to WHOIS data Important routers in AS15157
What is an ASN? Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.
The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS15157 at robtex .
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Pingable IPs 0 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more
Other Pingable IPs IP Address ASN Details 73.72.77.85 Ping AS7922 Comcast Cable Communications, LLC #1 7.97ms from Chicago, US 65.153.74.165 Ping AS209 CenturyLink Communications, LLC #57 4.86ms from Denver, US 103.11.199.69 Ping AS135905 VIETNAM POSTS AND TELECOMMUNICATIONS GROUP #1,420 0.61ms from Hanoi, VN 125.177.130.5 Ping AS17858 LG POWERCOMM #96 1.96ms from Incheon, KR 92.50.251.229 Ping AS12389 PJSC Rostelecom #24 1.38ms from Moscow, RU 175.10.27.85 Ping AS4134 CHINANET BACKBONE #5 10.94ms from Nanchang, CN 45.188.194.5 Ping AS269599 Digiplan Comercio De Equipamentos de Informatica L #19,049 8.89ms from Porto Alegre, BR 186.71.38.197 Ping AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC) #519 8.33ms from Quito, EC 41.250.59.197 Ping AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM #92 3.48ms from Rabat, MA 44.210.254.69 Ping AS14618 Amazon.com, Inc. #62 0.23ms from Reston, US
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Traceroute Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more. Traceroute →
$ traceroute -a -n -q1 -f7 199.3.108.2
traceroute to 199.3.108.2 (199.3.108.2 ): 64 hops max, 52 byte packets
Measurement taken from IPinfo ProbeNet in Minneapolis, US
On October 2, 2026
Netblock Company Num of IPs NORTHWESTERN CORPORATION
256 NORTHWESTERN CORPORATION
256 NORTHWESTERN CORPORATION
256
Powered by IP Ranges data
There are 2 peers for this ASN.
ASN Name Rank AS174 Cogent Communications, LLC #6 AS13576 SDN Communications #831
There are 2 upstreams for this ASN.
ASN Name Rank AS174 Cogent Communications, LLC #6 AS13576 SDN Communications #831
There are 0 downstreams for this ASN.
No downstreams found.
Important routers in AS15157 Share of IPv4 footprint per hexagon Less More
Held location over 90 days 83%
Held location over 1 year 89%
Median days between moves 38 days
Geolocation scope National How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.
There are 0 domain names hosted across 0 IP addresses on this ASN.
No domains found.
Activity A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.
Times shown in United States local time (UTC-7). Less More
Peak hour 13:00–14:00
Active hours 10 hrs (business hours)
Weekend vs weekday weekdays heavier
Busiest day Tue
Network type Business
Geography United States VeriSign Global Registry Services
