Internet Systems Consortium, Inc.
AS3557 is Internet Systems Consortium, Inc. (isc.org). It announces 512 IPv4 addresses in 2 prefixes, and 2 IPv6 prefixes.
United States· ARIN· allocated 1994-04-21· business
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 States512 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- ISC-AS
- name
- Internet Systems Consortium, Inc.
- org
- ISC-94-Z
- org name
- Internet Systems Consortium, Inc.
- org address
- PO Box 360, Newmarket, NH, 03857
- org city
- Newmarket
- org country
- US
- country
- US
- source
- arin
- created
- 1994-04-21
- updated
- 2012-04-02
- abuse name
- Internet Systems Consortium Abuse Team
- abuse email
- abuse@isc.org
- abuse phone
- +1-650-423-1300
- abuse kind
- role
- abuse city
- Newmarket
- abuse country
- US
- admin name
- Jeffrey Osborn
- admin email
- jeff@isc.org
- admin phone
- +1-408-455-8258
- admin kind
- person
- admin city
- Newmarket
- admin country
- US
- tech name
- Ray Bellis
- tech email
- ray@isc.org
- tech phone
- +1-650-423-1300
- tech kind
- person
- tech city
- Newmarket
- 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.
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- Anycast IP25650.00%
- None here
- None here
- 0.20%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 192.5.4.0/23 | United States | valid | 17 | 2026-10-02 |
| 192.5.5.0/24 | United States | valid | 16 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2001:500:2e::/47 | United States | valid | 19 | 2026-10-02 |
| 2001:500:2f::/48 | United States | valid | 18 | 2026-10-02 |
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