207.71.136.0/23

AS21896 · Alliant Energy

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Summary

Country	United States
Domain	alliantenergy.com
ASN	AS21896
Registry	ARIN
ID	NETBLK-ALI2

WHOIS Details

NetHandle:      NET-207-71-128-0-1
OrgID:          ALLIA-101
Parent:         NET-207-0-0-0-0
NetName:        NETBLK-ALI2
NetRange:       207.71.128.0 - 207.71.159.255
NetType:        allocation
RegDate:        1996-03-20
Updated:        2021-12-14
Source:         ARIN


OrgID:          ALLIA-101
OrgName:        Alliant Energy
CanAllocate:    
Street:         4902 North Biltmore Lane
City:           Madison
State/Prov:     WI
Country:        US
PostalCode:     53707-1007
Comment:        Standard NOC hours are 7am to 5pm CST
RegDate:        2008-12-30
Updated:        2020-12-08
OrgAdminHandle: DNA51-ARIN
OrgTechHandle:  DNA51-ARIN
OrgAbuseHandle: DNA51-ARIN
Source:         ARIN


POCHandle:      DNA51-ARIN
IsRole:         Y
LastName:       Data Networks Admin
FirstName:      
Street:         4902 North Biltmore Lane
City:           Madison
State/Prov:     WI
Country:        US
PostalCode:     53718
RegDate:        2008-12-29
Updated:        2025-02-14
OfficePhone:    +1-608-458-4357
Mailbox:        DL_IT_Data_Network-ALI@alliantenergy.com
Mailbox:        dl_its_telecom_networks@alliantenergy.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 207.71.0.0/16

Range	ASN	Company	Num of IPs
207.71.0.0/18	AS3356	Level 3 Parent, LLC	16,384
207.71.0.0/18	AS3549	Level 3 Parent, LLC	16,384
207.71.192.0/18	AS4927	Aseva LLC	16,384
207.71.64.0/18	AS2914	NTT America, Inc.	16,384
207.71.20.0/22	AS3356	World Net	1,024
207.71.12.0/23	AS11667	Westel, Inc.	512
207.71.14.0/23	AS26995	TeleNetwork	512
207.71.54.0/24	AS26831	Cameron Communications, LLC	256
207.71.32.0/24	AS13993	Motive	256
207.71.40.0/24	AS54050	Government Personnel Mutual Life Insurance	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

5 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
207.71.136.253	AS21896 Alliant Energy	`2.00ms` from Monticello, US
207.71.137.28	AS21896 Alliant Energy	`2.25ms` from Monticello, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
73.238.28.103	AS7922 Comcast Cable Communications, LLC	`9.47ms` from Boston, US
91.96.52.183	AS9145 EWE TEL GmbH	`10.30ms` from Copenhagen, DK
89.153.126.119	AS2860 NOS COMUNICACOES, S.A.	`12.04ms` from Lisbon, PT
74.41.158.199	AS5650 Frontier Communications of America, Inc.	`18.50ms` from Los Angeles, US
126.28.106.247	AS17676 SoftBank Corp.	`5.03ms` from Osaka, JP
187.10.65.215	AS27699 TELEFÔNICA BRASIL S.A	`3.03ms` from Sao Paulo, BR
210.105.136.151	AS4766 Korea Telecom	`6.51ms` from Seoul, KR
118.54.160.215	AS4766 Korea Telecom	`1.67ms` from Seoul, KR
20.43.153.71	AS8075 Microsoft Corporation	`0.38ms` from Singapore, SG
20.224.28.55	AS8075 Microsoft Corporation	`0.30ms` from Amsterdam, NL
190.248.225.39	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`8.00ms` from Bogota, CO
57.128.45.167	AS16276 OVH SAS	`0.09ms` from Gravelines, FR
168.126.241.87	AS4766 Korea Telecom	`0.51ms` from Incheon, KR
218.239.255.135	AS9318 SK Broadband Co Ltd	`1.59ms` from Incheon, KR
75.47.196.39	AS7018 AT&T Enterprises, LLC	`1.98ms` from Miami, US
154.6.223.39	AS204561 Diogenius SPRL	`3.80ms` from Paris, FR
65.140.146.151	AS209 CenturyLink Communications, LLC	`0.49ms` from Portland, US
79.132.3.23	AS29084 ComNet Bulgaria	`6.98ms` from Sofia, BG
54.238.56.39	AS16509 Amazon.com, Inc.	`0.19ms` from Tokyo, JP
204.19.251.103	AS812 Rogers Communications Canada Inc.	`2.70ms` from Toronto, CA
73.142.229.103	AS7922 Comcast Cable Communications, LLC	`8.45ms` from Boston, US
107.173.6.231	AS36352 HostPapa	`0.14ms` from Buffalo, US
107.167.58.135	AS36352 HostPapa	`0.30ms` from Los Angeles, US
193.90.197.247	AS2116 GLOBALCONNECT AS	`0.92ms` from Oslo, NO
83.141.164.119	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`7.21ms` from Paris, FR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 207.71.137.28

traceroute to 207.71.137.28 (207.71.137.28): 64 hops max, 52 byte packets

1 [AS397373] 198.37.101.1 46.472 ms

2 *

3 *

4 [AS3356] 4.39.191.78 1.732 ms

5 *

6 [AS21896] 207.71.136.1 11.758 ms

7 [AS21896] 207.71.137.28 11.959 ms

Measurement taken from

IPinfo ProbeNet in Monticello, US

On March 28th 2026

What are IP address ranges?

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Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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