AS30238
Cisco Systems Ironport Division
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
About IronPort
Cisco Systems, Inc., commonly known as Cisco, is an American computer networking company. Cisco made its first acquisition in 1993, which was followed by a series of further acquisitions.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS30238 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 23.90.117.0/24 | 19,088 | 2026-10-14 05:42:54 |
| 23.90.122.0/24 | 19,065 | 2026-10-14 05:42:54 |
| 23.90.105.0/24 | 19,035 | 2026-10-14 05:42:54 |
| 23.90.111.0/24 | 19,032 | 2026-10-14 05:42:54 |
| 23.90.115.0/24 | 19,019 | 2026-10-14 05:42:54 |
| 68.232.156.0/24 | 17,229 | 2026-10-14 05:42:54 |
| 68.232.151.0/24 | 17,171 | 2026-10-14 05:42:54 |
| 68.232.139.0/24 | 17,140 | 2026-10-14 05:42:54 |
| 68.232.138.0/24 | 17,110 | 2026-10-14 05:42:54 |
| 139.138.60.0/24 | 16,933 | 2026-10-14 05:42:54 |
| 207.54.69.0/24 | 16,927 | 2026-10-14 06:16:06 |
| 139.138.37.0/24 | 16,918 | 2026-10-14 05:42:54 |
| 139.138.36.0/24 | 16,898 | 2026-10-14 05:42:54 |
| 207.54.64.0/24 | 16,820 | 2026-10-14 06:16:06 |
| 207.54.65.0/24 | 16,817 | 2026-10-14 06:16:06 |
| 194.165.202.0/24 | 16,804 | 2026-10-14 06:16:06 |
| 216.71.158.0/24 | 16,753 | 2026-10-14 06:16:06 |
| 207.54.72.0/24 | 16,749 | 2026-10-14 05:42:54 |
| 207.54.77.0/24 | 16,746 | 2026-10-14 06:16:06 |
| 216.71.159.0/24 | 16,732 | 2026-10-14 06:16:06 |
| 194.165.193.0/24 | 16,194 | 2026-10-14 05:42:54 |
| 194.165.215.0/24 | 16,172 | 2026-10-14 05:42:54 |
| 194.165.213.0/24 | 16,160 | 2026-10-14 05:42:54 |
| 216.71.139.0/24 | 15,956 | 2026-10-14 06:23:57 |
| 216.71.136.0/24 | 15,768 | 2026-10-14 06:23:57 |
| 216.71.157.0/24 | 15,762 | 2026-10-14 06:23:57 |
| 216.71.156.0/24 | 15,758 | 2026-10-14 06:23:57 |
| 207.54.89.0/24 | 15,553 | 2026-10-14 06:23:57 |
| 207.54.91.0/24 | 15,531 | 2026-10-14 06:23:57 |
| 207.54.90.0/24 | 15,527 | 2026-10-14 06:23:57 |
| 139.138.61.0/24 | 15,384 | 2026-10-14 06:23:57 |
| 23.90.114.0/24 | 15,373 | 2026-10-14 06:23:57 |
| 139.138.63.0/24 | 15,364 | 2026-10-14 06:23:57 |
| 68.232.133.0/24 | 15,364 | 2026-10-14 06:23:57 |
| 68.232.159.0/24 | 15,342 | 2026-10-14 06:23:57 |
| 68.232.152.0/24 | 15,337 | 2026-10-14 06:23:57 |
| 68.232.150.0/24 | 15,332 | 2026-10-14 06:23:57 |
| 139.138.62.0/24 | 15,321 | 2026-10-14 06:23:57 |
| 207.54.88.0/24 | 14,966 | 2026-10-14 06:23:57 |
| 68.232.132.0/24 | 14,840 | 2026-10-14 06:23:57 |
| 184.94.255.0/24 | 13,558 | 2026-10-14 06:23:57 |
| 23.90.119.0/24 | 10,457 | 2026-10-14 05:42:09 |
| 23.90.123.0/24 | 10,452 | 2026-10-14 05:42:09 |
| 23.90.118.0/24 | 10,435 | 2026-10-14 05:42:09 |
| 23.90.110.0/24 | 10,411 | 2026-10-14 05:42:09 |
| 23.90.116.0/24 | 10,403 | 2026-10-14 05:42:09 |
| 23.90.104.0/24 | 10,395 | 2026-10-14 05:42:09 |
| 23.90.102.0/24 | 10,387 | 2026-10-14 05:42:09 |
| 207.54.67.0/24 | 10,308 | 2026-10-14 05:42:35 |
| 207.54.68.0/24 | 10,221 | 2026-10-14 05:42:35 |
Showing top 50 of 60 announced prefixes by sample volume.
Frequently Asked Questions
What is AS30238?
AS30238 is an Autonomous System Number assigned to Cisco Systems Ironport Division. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS30238 announce?
AS30238 announces 15.4K IPv4 addresses distributed across 30 routed CIDR prefixes. The network is registered in United States.
Who operates AS30238?
AS30238 is operated by Cisco Systems Ironport Division. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS30238 registered in?
AS30238 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
