Autonomous system
AS9021 ISNET
Unclassified RIPE
Summary
İşNet (Is Net Elektronik Bilgi Üretim Dağıtım Ticaret ve İletişim Hizmetleri A.Ş.)
isp enterprise legacy
ISNET is İşNet, a Turkish internet and telecom services provider established in 1999 and a subsidiary of İşbank (Türkiye İş Bankası).
What it's used for
Internet access and communications services aimed largely at corporate customers. Sampled reverse DNS is dominated by generic ptr-90-158-NNN-NNN.is.net.tr static-style naming plus VoIP hosts (mgcp-*.voiptest.is.net.tr), with no dsl/pppoe/dyn subscriber-pool markers, consistent with business/static assignments rather than a mass consumer eyeball pool.
Notable
A sizeable provider footprint across 90.158.0.0/90.159.0.0, 213.143.x, 212.98.x and other blocks. Live routing status was unavailable in the pack, but the prefix inventory and first-party is.net.tr rDNS confirm a genuine, self-operated Turkish ISP.
Interesting
Being owned by İşbank, İşNet grew out of a bank's IT/telecom arm into a commercial ISP and data-centre operator, which is why its addressing reads more corporate than residential.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 128 prefixes · 148K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| TR | Turkey | 129 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS9021- Registry name
- ISNET
- Registrant
- ISBANKASI-MNT
- Abuse contact
- abuse@is.net.tr
- Registered
- 2002-08-27
- Last changed
- 2026-08-12
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 155 valid, 0 with no ROA
- ROAs
- 190 authorising AS9021
- ASPA
- no ASPA record
- IRR
- 100% registered · 155 of 155 announcements
- Route objects
- 64 naming AS9021
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: 442 networks and 1,779 prefixes, as published 2026-10-23. 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