AS30215 — AS-CISCOHPS-APAC - Cisco Systems Ironport Division

AS30215 announces 8 IPv4 prefixes covering 3,840 addresses and 2 IPv6 prefixes.

About this network

AS-CISCOHPS-APAC is held by Cisco Systems Ironport Division.

What it's used for

• The address space carries email security infrastructure, evidenced by reverse DNS entries such as esa.hc714-22.ap.iphmx.com and sma1.hc275-61.ap.iphmx.com, which identify IronPort Email Security Appliances and Secure Mail Appliances.
• The AS announces 3840 IPv4 addresses across 8 prefixes and 2 IPv6 prefixes, with 5 observed neighbours, indicating a specialized service network rather than a general transit or access provider.

Notable

• All registrants for the announced prefixes are listed as Cisco Systems Ironport Division, matching the AS holder.
• IronPort Systems was acquired by Cisco Systems, and this AS represents the IP space allocated to that division for its security products.
• The inventory consists of multiple /23 and /24 blocks, including ranges in 139.138.0.0/16, 23.90.0.0/16, and 207.54.0.0/16, all registered under the netname CISL-7.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 23.90.106.0/23
• 23.90.108.0/23
• 23.90.120.0/24
• 139.138.28.0/22
• 139.138.42.0/23
• 139.138.44.0/23
• 207.54.75.0/24
• 207.54.83.0/24
• 2620:101:200d::/48
• 2620:101:200e::/48

Upstream networks

• AS4826 Vocus Connect International Backbone
• AS3257 GTT Communications Inc.
• AS2914 NTT America, Inc.
• AS38195 Superloop

Adjacent networks

• AS4826 Vocus Connect International Backbone
• AS3257 GTT Communications Inc.
• AS2914 NTT America, Inc.
• AS38195 Superloop

Routing security

• RPKI: 17 valid, 0 invalid and 0 not-found announcements; 17 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 37 route objects.
• Listed in as-sets: AS-CISCOHPS, AS-GTTCUST, AS-GTTCUST6, AS-HURRICANEV6, AS-SUPERLOOP-CUST, AS-TRANSROUTE-SPEC, AS2914:AS-ASIA, AS2914:AS-ASIA-V6, AS4826:AS-CUSTOMERS, AS4826:AS-TEST, AS7606:AS-SA-IX.