AS9830 — SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
AS9830 announces 11 IPv4 prefixes covering 8,960 addresses and 0 IPv6 prefixes.
About this network
AS9830 (SWIFTONLINE-AS-AP, "SWIFT ONLINE BORDER AS") is registered in India to SwiftMail Communications Limited, based in Chennai, operating under the Swift Online name. Registry directories classify it as an ISP; the announced inventory tells a more specific story, and it is worth reading carefully.
What it's used for
RIS sees 36 IPv4 prefixes carrying 9,216 addresses and no IPv6, announced through 3 BGP neighbours. Almost all of it is 202.91.64.0/19 split into individual /24s — announcing a block one /24 at a time, rather than as a single route, is a deliberate choice and is characteristic of address space that needs to be reputationally separable — plus a few unrelated /24s (160.20.5.0/24, 163.227.198.0/24, 103.239.65.0/24). One sampled address carries the operator's own newmail.swift-online.com, but most resolve to algorithmically-generated hostnames under many unrelated third-party domains (patterns like reminder5.<word>202.<domain>), including at least one offshore gambling domain. That is the classic look of address space used for bulk-email or affiliate-marketing sending pools, whether run by the operator or leased out to customers doing it.
Notable
- Marketing and inventory diverge. The AS is filed as an ISP, but there is no eyeball rDNS and no subscriber pattern in the space. Treat "ISP" here as a registry category, not a description of the traffic.
- The per-/24 deaggregation across a single /19 is the operational signature of a sender-reputation strategy: when one /24 gets blocklisted, the rest keep working.
- No IPv6 is announced.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 103.239.65.0/24
- 160.20.4.0/23
- 163.227.198.0/23
- 202.91.64.0/21
- 202.91.72.0/24
- 202.91.74.0/23
- 202.91.76.0/22
- 202.91.80.0/22
- 202.91.84.0/23
- 202.91.87.0/24
- 202.91.88.0/21
Upstream networks
Adjacent networks
Internet exchanges
- DE-CIX Mumbai — Mumbai, India
- Extreme IX Chennai — Chennai, India
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