AS21896
Alliant Energy
AS21896 is Alliant Energy (alliantenergy.com). It announces 4,096 IPv4 addresses in 8 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 2009-01-08· business
4,096
IPv4 addresses announced
8
IPv4 prefixes
0
IPv6 prefixes
0.00%
of its routes RPKI-valid
4,096
of its IPv4 geolocated
1
country
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States4,096 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- ALLIANT-ENERGY
- name
- Alliant Energy
- org
- ALLIA-101
- org name
- Alliant Energy
- org address
- 4902 North Biltmore Lane, Madison, WI, 53707-1007
- org city
- Madison
- org country
- US
- country
- US
- source
- arin
- created
- 2009-01-08
- updated
- 2012-03-02
- abuse name
- Data Networks Admin
- abuse email
- DL_IT_Data_Network-ALI@alliantenergy.com
- abuse phone
- +1-608-458-4357
- abuse kind
- role
- abuse city
- Madison
- abuse country
- US
- admin name
- Data Networks Admin
- admin email
- DL_IT_Data_Network-ALI@alliantenergy.com
- admin phone
- +1-608-458-4357
- admin kind
- role
- admin city
- Madison
- admin country
- US
- tech name
- Data Networks Admin
- tech email
- DL_IT_Data_Network-ALI@alliantenergy.com
- tech phone
- +1-608-458-4357
- tech kind
- role
- tech city
- Madison
- tech country
- US
- abuse unvalidated since
- 2026-02-14
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- 0.05%
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- 0.05%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 198.7.38.0/23 | United States | not found | 17 | 2026-10-02 |
| 198.7.42.0/23 | United States | not found | 17 | 2026-10-02 |
| 198.7.44.0/23 | United States | not found | 17 | 2026-10-02 |
| 198.7.46.0/23 | United States | not found | 17 | 2026-10-02 |
| 207.71.128.0/23 | United States | not found | 17 | 2026-10-02 |
| 207.71.134.0/23 | United States | not found | 17 | 2026-10-02 |
| 207.71.136.0/23 | United States | not found | 17 | 2026-10-02 |
| 207.71.142.0/23 | United States | not found | 17 | 2026-10-02 |
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01 · License
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