Autonomous system
AS30238 AS-IRONP-VEGA
Unclassified APNIC
Summary
Cisco Ironport
security email enterprise cisco
AS-IRONP-VEGA is operated by Cisco Systems Ironport Division.
What it's used for
- The address space carries email security infrastructure, evidenced by reverse DNS entries such as
esa2.hc273-85.eu.iphmx.comandesa5.hc1475-57.eu.iphmx.com, whereesadenotes Email Security Appliance andiphmxreferences IronPort's cloud platform. - The AS announces 15,360 IPv4 addresses across 30 prefixes and 4 IPv6 prefixes, maintaining 6 observed neighbours; this ratio of moderate address inventory to few peering partners indicates a dedicated service network rather than a transit provider.
Notable
- All registrants for the largest prefixes are consistently listed as Cisco Systems Ironport Division, with netnames
CISL-7andIRONPORT-DHappearing across the inventory. - IronPort Systems was acquired by Cisco Systems, and this AS represents the legacy address space of that division now integrated into Cisco's security portfolio.
- The inventory is finely subdivided into numerous /22 and /23 blocks, reflecting a segmented corporate estate for appliance deployment and cloud services.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.117.100 |
Transit providers
5 upstream, 0 downstream and 10 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 30 prefixes · 15.36K addresses IPv6 4 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 34 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS30238- Registry name
- AS-IRONP-VEGA
- Registrant
- Cisco Systems Ironport Division
- Abuse contact
- netops-ironport@cisco.com
- Registered
- 2008-02-01
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 88% valid · 56 valid, 8 with no ROA
- ROAs
- 56 authorising AS30238
- ASPA
- no ASPA record
- IRR
- 100% registered · 64 of 64 announcements
- Route objects
- 97 naming AS30238
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 440 networks and 1,773 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere