AS203963
SPDNet Telekomunikasyon Hizmetleri Bilgi Teknolojileri Taahhut Sanayi Ve Ticaret A.S.
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Active-threat / abuse risk −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 5 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS203963 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 195.211.188.0/24 | AS48678, AS64516, AS203963 | 2026-09-08 20:10:25 |
| 31.133.89.0/24 | AS48678, AS64516, AS203963 | 2026-09-08 20:10:25 |
| 31.133.88.0/24 | AS48678, AS64516, AS203963 | 2026-09-08 20:10:25 |
| 91.228.14.0/24 | AS48678, AS64516, AS203963 | 2026-09-08 20:10:25 |
| 91.228.15.0/24 | AS48678, AS64516, AS203963 | 2026-09-08 17:10:25 |
AS203963 — global IP footprint
Cities where AS203963 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS203963 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 103.31.209.0/24 | 18,566 | 2026-09-08 16:53:09 |
| 216.24.223.0/24 | 9,897 | 2026-09-08 16:54:04 |
| 31.133.89.0/24 | 9,887 | 2026-09-08 16:52:33 |
| 31.133.88.0/24 | 9,887 | 2026-09-08 16:52:33 |
| 31.133.91.0/24 | 9,883 | 2026-09-08 16:52:33 |
| 31.133.90.0/24 | 9,882 | 2026-09-08 16:52:33 |
| 31.133.80.0/22 | 9,787 | 2026-09-08 16:52:33 |
| 167.253.50.0/24 | 9,715 | 2026-09-08 16:53:09 |
| 103.125.147.0/24 | 9,694 | 2026-09-08 16:53:09 |
| 141.195.124.0/24 | 9,692 | 2026-09-08 16:53:09 |
| 176.103.224.0/22 | 9,516 | 2026-09-08 16:53:40 |
| 94.154.38.0/24 | 9,225 | 2026-09-08 16:53:40 |
| 94.154.37.0/24 | 9,221 | 2026-09-08 16:53:40 |
| 91.228.15.0/24 | 9,213 | 2026-09-08 16:53:40 |
| 195.211.188.0/24 | 9,106 | 2026-09-08 16:53:40 |
| 91.228.12.0/24 | 9,103 | 2026-09-08 16:53:40 |
| 91.228.14.0/24 | 9,100 | 2026-09-08 16:53:40 |
| 94.154.41.0/24 | 9,044 | 2026-09-08 16:53:40 |
| 94.154.44.0/24 | 9,043 | 2026-09-08 16:53:40 |
| 209.145.42.0/24 | 8,975 | 2026-09-08 16:54:12 |
| 176.46.142.0/24 | 8,794 | 2026-09-08 16:53:40 |
| 206.168.88.0/24 | 8,309 | 2026-09-08 16:37:16 |
| 206.168.91.0/24 | 8,297 | 2026-09-08 16:37:16 |
| 206.168.89.0/24 | 8,138 | 2026-09-08 16:37:16 |
| 206.168.90.0/24 | 8,135 | 2026-09-08 16:37:16 |
| 176.46.136.0/24 | 4,707 | 2026-07-13 06:46:18 |
| 162.33.167.0/24 | 4,572 | 2026-07-27 00:01:25 |
| 94.74.137.0/24 | 2,859 | 2026-07-13 06:46:18 |
| 94.74.159.0/24 | 2,856 | 2026-07-13 06:46:18 |
| 216.24.215.0/24 | 1,859 | 2026-06-09 07:43:59 |
| 140.228.25.0/24 | 1,841 | 2026-06-09 07:43:59 |
| 139.177.149.0/24 | 1,761 | 2026-06-09 07:43:28 |
| 192.190.232.0/24 | 1,747 | 2026-06-09 07:44:59 |
| 218.98.85.0/24 | 1,539 | 2026-06-12 09:08:50 |
Frequently Asked Questions
What is AS203963?
AS203963 is an Autonomous System Number assigned to SPDNet Telekomunikasyon Hizmetleri Bilgi Teknolojileri Taahhut Sanayi Ve Ticaret A.S.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS203963 announce?
AS203963 announces 13.6K IPv4 addresses distributed across 27 routed CIDR prefixes. The network is registered in Türkiye.
Who operates AS203963?
AS203963 is operated by SPDNet Telekomunikasyon Hizmetleri Bilgi Teknolojileri Taahhut Sanayi Ve Ticaret A.S.. The organization is based in Türkiye. You can view all IP ranges and related ASNs on the organization page.
What country is AS203963 registered in?
AS203963 is registered in Türkiye. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
