Autonomous system
AS21443 CH_ATT_11
Unclassified RIPE
Summary
AT&T Global Network Services Nederland B.V.
business enterprise att netherlands
The AS handle CH_ATT_11 is held by AT&T Global Network Services Nederland B.V.
What it's used for
- The space carries corporate infrastructure, evidenced by the netname
CH-ITPRO-NETassociated with the single announced prefix. - The AS announces 256 IPv4 addresses across 1 prefix and maintains 1 observed neighbour, a ratio consistent with a small, isolated internal corporate estate rather than a transit or access network.
Notable
- The RDAP registrant matches the registry holder, confirming the space is directly owned by AT&T Global Network Services Nederland B.V.
- The address inventory consists of a single /24 block (193.41.106.0/24), indicating a finely subdivided internal network typical of large corporate entities managing site-specific segmentation.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS2686 | AT&T Enterprises, LLC | 60 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| NL | Netherlands | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS21443- Registry name
- CH_ATT_11
- Registrant
- MAINT-AS2686
- Abuse contact
- peering@intl.att.com
- Registered
- 2001-12-11
- Last changed
- 2024-11-12
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS21443
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 2 naming AS21443
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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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