Autonomous system
AS9329 SLTINT-AS-AP Sri Lanka Telecom Internet
Residential APNIC
Summary
Sri Lanka Telecom (SLT-Mobitel)
isp residential legacy
AS9329 (SLTINT-AS-AP) is the Internet-services AS of Sri Lanka Telecom, the country's incumbent fixed-line operator (marketed today alongside its mobile arm as SLT-Mobitel). It is the network most Sri Lankan fixed broadband subscribers sit behind.
What it's used for
This is an eyeball access network, and the routing shape says so plainly. RIS observes 146 IPv4 prefixes carrying about 264,448 addresses and 10 IPv6 prefixes, against only 12 BGP neighbours. A quarter of a million addresses with barely a dozen neighbours is the signature of an access network serving its own subscribers: the traffic terminates on customers, not on other people's networks, so there is no reason to accumulate the hundreds of adjacencies a wholesale carrier would show. The inventory is consistent with a national incumbent that received large allocations rather than scraping together scattered blocks: a 124.43.0.0/16, several /18s (203.94.64.0/18, 222.165.128.0/18, 220.247.192.0/18, 203.115.0.0/18) and a dense run of /19s out of 112.135.0.0. IPv6 is deployed out of 2402:d000::/32, carved into /40s, which is how a broadband operator hands space to regional aggregation. Sampled reverse DNS returns v4.dns.slt.lk on several addresses, confirming SLT's own resolver infrastructure lives inside the space.
Notable
- Sri Lanka Telecom is the incumbent telco; this AS carries its consumer and business Internet access, not a separate transit product.
- The
slt.lkPTRs are operator infrastructure (recursive DNS), which is a useful positive confirmation that the holder actually operates the space. - IPv6 is real here, not token: a full
/32broken into multiple routed/40s.
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 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 101 prefixes · 262K addresses IPv6 34 prefixes
| Country | Name | Prefixes |
|---|---|---|
| LK | Sri Lanka | 135 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9329- Registry name
- SLTINT-AS-AP
- Registrant
- Sri Lanka Telecom Ltd
- Abuse contact
- abuse@slt.lk
- Registered
- 2008-09-04
- Last changed
- 2021-01-12
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 95% valid · 232 valid, 0 with no ROA 12 RPKI-invalid
- ROAs
- 115 authorising AS9329
- ASPA
- no ASPA record
- IRR
- 100% registered · 244 of 244 announcements
- Route objects
- 3,471 naming AS9329
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 436 networks and 1,771 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