AS28773 — AS-MASTER

Network type: residential

AS28773 announces 2 IPv4 prefixes covering 8,704 addresses and 3 IPv6 prefixes.

About this network

AS-MASTER is operated by Global Technologies of Ukraine LLC.

What it's used for

• The address space carries residential and business access traffic, evidenced by reverse DNS entries such as km-unallocated.gtu.net.ua, facebook-fna-63.gtu.net.ua, and GGC-59.gtu.net.ua.
• The network announces 8704 IPv4 addresses across 2 prefixes and 3 IPv6 prefixes, while maintaining 25 observed neighbours, a ratio consistent with a regional access provider rather than a transit hub.

Notable

• Registrants for both announced IPv4 prefixes (GTU and GTU-NET) are listed as Global Technologies of Ukraine LLC, matching the AS holder.
• The operator is identified in peering databases as a Cable/DSL/ISP with regional scope.
• The inventory consists of one large /19 block and one /23 block, with the majority of sampled reverse DNS pointing to unallocated or specific customer-facing hostnames.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 188.190.160.0/19
• 195.78.38.0/23
• 2001:67c:2ee4::/48
• 2001:3840::/29
• 2a13:e780::/29

Upstream networks

• AS6939 Hurricane Electric LLC
• AS3257 GTT Communications Inc.
• AS3255 LLC EKSINTECH
• AS50263 A-Systems Sp. z o.o.
• AS43668 "AS43668" LLC
• AS29632 Netassist International EOOD
• AS24482 SG.GS
• AS3303 Swisscom (Schweiz) AG

Downstream networks

• AS8779 KhmelnitskInfocom LTD
• AS213389 Podolskie opticheskie seti Ltd.
• AS43301 MAGICOM Ltd
• AS56522 FOP Naryshkin Igor Sergeevich
• AS56423 FOP Lisovskiy Dmitro Sergiyovich
• AS29469 Global Technologies of Ukraine LLC
• AS212604 WiNet LLc

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS8779 KhmelnitskInfocom LTD
• AS213389 Podolskie opticheskie seti Ltd.
• AS43668 "AS43668" LLC
• AS43301 MAGICOM Ltd
• AS56522 FOP Naryshkin Igor Sergeevich
• AS3257 GTT Communications Inc.
• AS56423 FOP Lisovskiy Dmitro Sergiyovich
• AS29469 Global Technologies of Ukraine LLC
• AS212604 WiNet LLc
• AS3255 LLC EKSINTECH
• AS50263 A-Systems Sp. z o.o.
• AS29632 Netassist International EOOD
• AS24482 SG.GS
• AS3303 Swisscom (Schweiz) AG

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• Giganet Internet Exchange — Kyiv, Ukraine
• GNM Internet Exchange Ukraine — Kiev, Ukraine