AS27451
US Oncology, Inc.
AS27451 is US Oncology, Inc. (mckesson.com). It announces 768 IPv4 addresses in 3 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 2003-03-10· business
768
IPv4 addresses announced
3
IPv4 prefixes
0
IPv6 prefixes
0.00%
of its routes RPKI-valid
768
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 States768 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- USO-ASN
- name
- US Oncology, Inc.
- org
- USONC
- org name
- US Oncology, Inc.
- org address
- 10101 Woodloch Forest, The Woodlands, TX, 77380
- org city
- The Woodlands
- org country
- US
- country
- US
- source
- arin
- created
- 2003-03-10
- updated
- 2012-03-02
- abuse name
- Network Infrastructure Team
- abuse email
- NetworkInfrastructureTeam2@mckesson.com
- abuse phone
- +1-972-446-4800
- abuse kind
- role
- abuse city
- Irving
- abuse country
- US
- admin name
- Network Infrastructure Team
- admin email
- NetworkInfrastructureTeam2@mckesson.com
- admin phone
- +1-972-446-4800
- admin kind
- role
- admin city
- Irving
- admin country
- US
- tech name
- Network Infrastructure Team
- tech email
- NetworkInfrastructureTeam2@mckesson.com
- tech phone
- +1-972-446-4800
- tech kind
- role
- tech city
- Irving
- 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 IP131.69%
- cliproxy0.13%
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 38.68.63.0/24 | United States | not found | 17 | 2026-10-02 |
| 206.203.80.0/24 | United States | not found | 17 | 2026-10-02 |
| 206.203.81.0/24 | United States | not found | 17 | 2026-10-02 |
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