AS28773 — AS-MASTER Global Technologies of Ukraine LLC

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
• AS3356 Level 3 Parent, LLC
• AS3255 LLC EKSINTECH
• AS50263 A-Systems Sp. z o.o.
• AS3257 GTT Communications Inc.
• 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
• AS35325 "INCOMPLAST SERVICE" LLC

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS8779 KhmelnitskInfocom LTD
• AS213389 Podolskie opticheskie seti Ltd.
• AS43301 MAGICOM Ltd
• AS3356 Level 3 Parent, LLC
• AS56522 FOP Naryshkin Igor Sergeevich
• AS56423 FOP Lisovskiy Dmitro Sergiyovich
• AS43668 "AS43668" LLC
• AS29469 Global Technologies of Ukraine LLC
• AS212604 WiNet LLc
• AS3257 GTT Communications Inc.
• AS3255 LLC EKSINTECH
• AS50263 A-Systems Sp. z o.o.
• AS24482 SG.GS
• AS41033 D2CLOUD NETWORK SERVICES (PTY) LTD
• AS35325 "INCOMPLAST SERVICE" LLC
• AS29632 Netassist International EOOD
• AS3303 Swisscom (Schweiz) AG

Routing security

• RPKI: 5 valid, 0 invalid and 0 not-found announcements; 13 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 15 route objects.
• Listed in as-sets: AS-8764-EXCLUDE-AMS-IX-RS, AS-GTTCUST, AS-GTTCUST6, AS-GTU-V6, AS-HURRICANE, AS-HURRICANEV6, AS-KMIX, AS-KMIXNET, AS-LVIV-IX, AS-LVIV-IX-UTG-FIX, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS-MASTER, AS-RETN-ACTUAL-V4, AS-TRANSROUTE-SPEC, AS-UANG, AS-UARNET, AS203462:AS-NVC-DECIX_FRA_RS, AS24748:AS-IX, AS24748:AS-THINX, AS3303:AS-SWCMPEERS, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6, AS8821:AS-PEERS.

Internet exchanges

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