Autonomous system
AS10220 INTERFAST-AS-ID PT. Kreasi Sejahtera Teknologi
Unclassified AFRINIC
Summary
Interfast (PT Kreasi Sejahtera Teknologi)
business isp small
INTERFAST-AS-ID is PT. Kreasi Sejahtera Teknologi, a Jakarta internet service provider trading as Interfast. It belongs to Sejahtera Group, a Jakarta company founded in 1984 that was among Indonesia's earliest ISPs and a founding member of APJII, the national ISP association.
What it's used for
- Internet access and voice/data network services sold in Indonesia, backed by the group's own international submarine-fibre capacity out of Jakarta.
- The AS itself is small. RIS sees 2 IPv4 prefixes,
202.51.198.0/24and202.51.214.0/24(512 addresses), no IPv6, and 2 observed BGP neighbours.
Notable
- A licensed provider, but on the evidence this AS is serving businesses rather than a consumer eyeball base. Two /24s cannot hold a residential subscriber population of any meaningful size, even behind NAT, and the two neighbours are consistent with a small operator taking upstream from a pair of transits rather than aggregating downstream customer ASes. Corporate dedicated-access circuits, where each customer needs only a few routable addresses, fit 512 addresses comfortably.
- The two prefixes come from adjacent slices of the same legacy
202.51.0.0/16APNIC range, which is what an Indonesian ISP of that vintage would have been assigned in the 1990s. There is no sign of the multi-RIR scatter that marks an address broker: the space is old, contiguous in origin, and self-announced. - Confidence is deliberately capped here. The holder is firmly identified, but the customer mix behind 512 addresses is not something the routing table alone can settle, and no reverse DNS was returned for the addresses sampled.
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 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| ID | Indonesia | 2 |
Registry
Allocation record
- Registry
- AFRINIC
- Handle
AS10220- Registry name
- INTERFAST-AS-ID
- Abuse contact
- hostmaster@interfast.net.id
- Registered
- 2019-08-20
- Last changed
- 2021-07-27
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS10220
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 51 naming AS10220
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 1,783 prefixes, as published 2026-10-20. 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