| Base | Record | Name | IP | Reverse | Route | AS |
| 64.20.149.in-addr.arpa | ns | ns-ext.isc.org | 204.152.184.64 United States | 204.152.184.0/21 ISC | AS1280 ISC- Internet Systems Consortium, Inc. |
| ns-ext.nrt1.isc.org | 192.228.90.19 United States | 192.228.90.0/24 Internet Software Consortium | AS2500 WIDE Project in Japan |
| ns-ext.lga1.isc.org | 192.228.91.19 United States | 192.228.91.0/24 Internet Systems Consortium, Inc., New York, NY, USA | AS27319 ISC-LGA1 Internet Systems Consortium, Inc. |
| ns-ext.sth1.isc.org | 192.228.89.19 United States | 192.228.89.0/24 Internet Systems Consortium, Inc. | AS8674 NETNOD-IX Netnod Internet Exchange Sverige AB (former D-GIX) $Id: aut-num: ,v 1.12 2008/07/01 12:56:12 liman Exp $ |
| 20.149.in-addr.arpa | ns-soa | sfba.sns-pb.isc.org | 149.20.64.3 United States | 149.20.0.0/16 AS1280 project netblock | AS1280 ISC- Internet Systems Consortium, Inc. |
| ns | sfba.sns-pb.isc.org | 149.20.64.3 United States |
| ord.sns-pb.isc.org | 199.6.0.30 United States | 199.6.0.0/24 Internet Systems Consortium, Inc. (ISC) | AS33071 ISC-ORD1 Internet Systems Consortium, Inc. |
| ams.sns-pb.isc.org | 199.6.1.30 United States | 199.6.1.0/24 Internet Systems Consortium, Inc. (ISC) | AS30132 ISC-AMS1 Internet Systems Consortium, Inc. |