$ query “AS139903” --type=asn → 1 result(s)
AS139903 — RETN-AS-AP
RETN Telecoms Ltd.
AS139903 is a stub network run by RETN Telecoms Ltd., registered in Taiwan. The network announces 512 IPv4 addresses. Supports IPv6.
Basic Information
- Country
- 🇹🇼 Taiwan
- Category
- Internet Service Provider
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 / 1
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 512
- Largest IPv4 Prefix
- /23 (512 addresses)
- Largest IPv6 Prefix
- /48
- Geolocated Countries
- 🇹🇼 TW (2 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 512 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 1 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 0 downstream autonomous systems buying transit
- Degree
- 3 unique BGP neighbors (providers + customers + peers)
- Reach
- 0 — customer cone size measuring network influence
- Degree Rank
- #25 654
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (1 total)
- 103.146.250.0/23 (512 addresses)
IPv6 Prefixes (1 total)
- 2001:df2:7580::/48