asn.dev

Autonomous system

AS38042 SDCL-AS-AP Sky Digital Co., Ltd.

Unclassified APNIC

IPv4 addresses 3.33K 8 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly TW
Exchanges 1 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Sky Digital Co., Ltd.

Taiwan, Province of China · AI-generated

cable dsl isp residential

The AS handle SDCL-AS-AP is held by Sky Digital Co., Ltd.

What it's used for

  • The address space carries residential broadband traffic, evidenced by reverse DNS entries such as 187-79-193-0.TW-NWT.telecom.tw and 103-123-134-128.TW-TPE.telecom.tw, which reference the operator's telecom.tw domain and regional codes for New Taipei, Taoyuan, and Taipei.
  • The network announces 4,352 IPv4 addresses across 9 prefixes while maintaining only 1 observed neighbour, a ratio that indicates an access or eyeball network rather than a transit provider.
  • Traffic from this AS consists of subscriber internet access for cable and DSL customers in Taiwan, consistent with the operator's business as a local ISP.

Notable

  • Registrants for the majority of prefixes align with the announcer, listing Sky Digital Co Ltd administrator and TWNIC ROLE-SDCL-TW, with netnames SDCL-TW and SDCL-TW-NET.
  • Two prefixes deviate from the primary registrant pattern: 103.177.33.0/24 is registered to IRT-IMCRS-TW with netname IMCRS, and 161.248.145.0/24 is registered to IRT-WANGTIAN-TW with netname WANGTIAN.
  • The inventory is composed of small /23 and /24 blocks, with the largest being 187.79.192.0/22.

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

Full topology · Graph

Internet exchanges

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Student & Technology United Internet ExchangesTaipei, Taiwan103.158.187.72

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS134823Sky Digital Co., Ltd.839

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-12, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 8 prefixes · 3.33K addresses IPv6 0 prefixes

CountryNamePrefixes
TWTaiwan, Province of China8

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS38042
Registry name
SDCL-AS-AP
Abuse contact
soc@imcloud.tw
Registered
2023-08-15
Last changed
2023-08-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 22 valid, 0 with no ROA
ROAs
15 authorising AS38042
ASPA
no ASPA record
IRR
100% registered · 22 of 22 announcements
Route objects
34 naming AS38042

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: 436 networks and 1,769 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

Cross-check