Tierzero
AS11509 is Tierzero (tierzero.com). It announces 118,528 IPv4 addresses in 14 prefixes, and 1 IPv6 prefixes.
United States· ARIN· allocated 1998-09-15· isp
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 States118,528 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- TIERZERO-AS11509
- name
- Tierzero
- org
- TIERZ
- org name
- Tierzero
- org address
- 77 N Mentor Ave, Pasadena, CA, 91106
- org city
- Pasadena
- org country
- US
- country
- US
- source
- arin
- created
- 1998-09-15
- updated
- 2012-02-24
- abuse name
- Abuse Department
- abuse email
- abuse@tierzero.com
- abuse phone
- +1-213-784-1400
- abuse kind
- role
- abuse city
- Los Angeles
- abuse country
- US
- admin name
- ADMIN-TIERZERO
- admin email
- ipadmin@tierzero.net
- admin phone
- +1-213-784-1397
- admin kind
- role
- admin city
- Los Angeles
- admin country
- US
- tech name
- TECH-TIERZERO
- tech email
- ipnetworkops@tierzero.net
- tech phone
- +1-213-784-1397
- tech kind
- role
- tech city
- Los Angeles
- tech country
- US
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.
- VPN IP161watchguard0.14%
- anyip, thordata0.00%
- None here
- None here
- None here
- None here
- Hosting IP98,30482.94%
- None here
- None here
- None here
- SSH IP380.03%
- 0.01%
- 0.01%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 64.239.128.0/18 | United States | not found | 17 | 2026-10-02 |
| 66.6.208.0/20 | United States | not found | 17 | 2026-10-02 |
| 72.18.0.0/19 | United States | not found | 17 | 2026-10-02 |
| 162.142.73.0/24 | United States | not found | 17 | 2026-10-02 |
| 208.179.0.0/16 | United States | not found | 17 | 2026-10-02 |
| 216.31.128.0/18 | United States | not found | 17 | 2026-10-02 |
| 216.116.96.0/23 | United States | not found | 17 | 2026-10-02 |
| 216.116.99.0/24 | United States | not found | 17 | 2026-10-02 |
| 216.116.100.0/22 | United States | not found | 17 | 2026-10-02 |
| 216.116.104.0/21 | United States | not found | 17 | 2026-10-02 |
| 216.116.112.0/21 | United States | not found | 17 | 2026-10-02 |
| 216.116.120.0/22 | United States | not found | 17 | 2026-10-02 |
| 216.116.124.0/23 | United States | not found | 17 | 2026-10-02 |
| 216.116.126.0/24 | United States | not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2604:4bc0::/36 | United States | not found | 20 | 2026-10-02 |
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