AS16503
Zayo Bandwidth
AS16503 is Zayo Bandwidth (zayo.com). It announces 20,224 IPv4 addresses in 4 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 2000-05-04· isp
20,224
IPv4 addresses announced
4
IPv4 prefixes
0
IPv6 prefixes
100.00%
of its routes RPKI-valid
20,224
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 States20,224 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- ZAYO-16503
- name
- Zayo Bandwidth
- org
- ZAYOB
- org name
- Zayo Bandwidth
- org address
- 1401 Wynkoop St., #500, Denver, CO, 80202
- org city
- Denver
- org country
- US
- country
- US
- source
- arin
- created
- 2000-05-04
- updated
- 2016-09-07
- abuse name
- Abuse
- abuse email
- abuse@zayo.com
- abuse phone
- +1-866-236-2824
- abuse kind
- role
- abuse city
- Boulder
- abuse country
- US
- admin name
- Zayo IP Engineering
- admin email
- ipeng@zayo.com
- admin phone
- +1-866-236-2824
- admin kind
- role
- admin city
- Boulder
- admin country
- US
- tech name
- Zayo IP Engineering
- tech email
- ipeng@zayo.com
- tech phone
- +1-866-236-2824
- tech kind
- role
- tech city
- Boulder
- 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 IP28watchguard0.14%
- None here
- 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 |
|---|---|---|---|---|
| 64.20.96.0/19 | United States | valid | 16 | 2026-10-02 |
| 64.124.127.0/24 | United States | valid | 16 | 2026-10-02 |
| 66.45.192.0/19 | United States | valid | 16 | 2026-10-02 |
| 216.178.48.0/20 | United States | valid | 16 | 2026-10-02 |
00 · Evaluate
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01 · License
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Standard, for detection and decisions inside your own product and operations.
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