Melnik Tamara

Melnik Tamara is the public name on RIPE person handle MT17303-RIPE, serving as administrative contact for the Kremen-IX internet exchange (AS211947) operated by PP Vizit-Service in Kremenchuk, Ukraine. Evidence from RIPE records, the exchange’s website, PeeringDB, BGP.tools, and Ukrainian government and business registries collectively show her historic directorship at PP Vizit-Service and her current registry role. However, no current source confirms her present-day employment or operational control; the operational contacts are Alexander Melnik and Oleksandr Melnyk. Watchpoints include changes to the MT17303-RIPE handle, PP Vizit-Service leadership, and the exchange’s peering policy. The link between Latin and Cyrillic name forms relies on a strong but collision-vulnerable match.

Melnik Tamara

Melnik Tamara is the public name on RIPE person handle MT17303-RIPE, serving as administrative contact for the Kremen-IX internet exchange (AS211947) operated by PP Vizit-Service in Kremenchuk, Ukraine. Ukrainian public records link her full-name form Мельник Тамара Миколаївна to a past directorship of the company, though current leadership is different and name collisions cannot be ruled out.

Why It Matters

Removal or replacement of the MT17303-RIPE handle could delay administrative responses to routing incidents or resource management requests for AS211947. The impact is indirect but real: it shifts the public face of accountability for a small regional exchange and route server environment.

What Public Sources Show

Melnik Tamara serves as the administrative contact for the Ukrainian internet exchange Kremen-IX (AS211947) according to public RIPE registry records. Her handle MT17303-RIPE is listed as admin-c for the exchange and for its operator, Private Enterprise Vizit-Service. While her current operational role is uncertain, this named handle provides a single human accountability point for routing coordination in the Kremenchuk region.

RIPE-derived mirrors show that the person object was created in October 2017 and last modified in January 2021, coinciding with the registration of AS211947. A 2020 Ukrainian National Council report names Мельник Тамара Миколаївна as director of PP Vizit-Service, describing the company as a program-service provider. Ukrainian business registry aggregators now show a different current leader, signalling a leadership transition since that time.

The transliteration from Cyrillic to Latin script introduces a risk of name collision, though the consistent linkage to PP Vizit-Service strengthens the association.

The Kremen-IX operator website describes an open peering environment with BGP route servers, 10 Gigabit Ethernet participant ports, and IRR-based policy enforcement. PeeringDB lists Alexander Melnik as the operational NOC and policy contact—not Tamara. BGP.tools confirms that AS211947 originates one IPv4 and one IPv6 prefix and peers with AS41009 (Oleksandr Melnyk). This operating context belongs to the organisation, not to the individual contact.

Her verifiable control surface is limited to the RIPE registry: she can update resource registrations, verify contact information, and respond to abuse correspondence. This gatekeeping function matters because delays in administrative updates can affect external visibility of the exchange’s routing posture. Should the handle be decommissioned without a replacement, the public accountability chain for AS211947 would break until a new contact is published.

Observers should watch for any removal or replacement of the MT17303-RIPE handle on RIPE records, which would signal a change in administrative responsibility. Leadership changes at PP Vizit-Service, tightening of peering requirements, or alterations to route server communities would also alter the surrounding landscape. Expansion or contraction of the exchange’s infrastructure footprint would further shift the weight of this administrative contact.

The link between the Latin-script name and the Ukrainian-language documents rests on a strong name match, but public full-name records can collide. No reviewed source confirms that Tamara currently holds any executive role at the company. Readers should treat her position as a registry-limited and historical touchpoint, pending further verification from official Ukrainian registry extracts.

Operating Surface

Her verified public role is limited to the admin-c position in the RIPE NCC database for AS211947, which grants the ability to update registry data and act as a point of contact for administrative and abuse inquiries. The actual operation of the exchange—route servers, peering policy, and participant ports—belongs to the affiliated enterprise, not to the individual.

A named registry contact provides a human accountability layer for network operators, incident responders, and registry reviewers dealing with the exchange. Changes to her handle, maintainer records, or company leadership would alter who appears publicly responsible for routing coordination, even if operational control remains with the organisation.

Watchpoints

This individual represents a thin but real administrative intermediate for a small regional exchange. While her operational influence is minimal, her registry role makes her a point of contact that could delay or facilitate coordination in routing incidents. Strategic interest lies in tracking personnel shifts that might signal changes in the exchange's governance or ownership.

Change of admin-c handle for AS211947; removal of PP Vizit-Service from the exchange's operation; appearance of Tamara in other infrastructure-facing roles; changes to VIZITNETUA-MNT maintainer.

Current employment status and decision-making authority at PP Vizit-Service are not publicly documented. The exact relationship between the RIPE person object and the Ukrainian company records lacks a direct cross-reference; an official extract from the Ukrainian state registry matching the MT17303-RIPE handle is needed for certainty.

Sources

• Registry RDAP / WHOIS record - Provides public-source identity and registry context for Melnik Tamara, showing the admin-c handle for AS211947.
• whois.ipinsight.io - RIPE-format text identifies KREMEN-IX, PP Vizit-Service, Ukraine, admin-c MT17303-RIPE, and a person object named Melnik Tamara with nic-hdl MT17303-RIPE.
• Operator website - Kremen-IX presents itself as an internet exchange route-server environment using AS211947 and AS-KREMENIX, with open peering, BGP route-server sessions, 10Gbps Ethernet participant ports, IRR-policy requirements, and PP Vizit-Service company details.
• PeeringDB network profile - PeeringDB lists kremen-IX Route Servers under PE Vizit-Service with ASN 211947, network type Route Server, regional scope, 5-10Gbps traffic level, open peering policy, and visible NOC/policy contacts named Alexander Melnik.
• PeeringDB organisation page - PeeringDB's organisation page for PE Vizit-Service lists Kremenchuk, UA context and networks including AS41009 and kremen-IX Route Servers AS211947.
• bgp.tools - BGP.tools lists AS211947 as PP Vizit-Service, active under RIPE, registered on 25 Jan 2021, with one IPv4 and one IPv6 originated prefix and connectivity to AS41009 Oleksandr Melnyk.
• media.poda.gov.ua - A 2020 Ukrainian National Council regional report names Мельник Тамара Миколаївна as director of PP Vizit-Service in Kremenchuk and describes the company as a program-service provider.
• opendatabot.ua - OpenDataBot lists Мельник Тамара Миколаївна as a past director of PP Vizit-Service and includes a warning that exact full-name matches in public records can collide.
• opendatabot.ua - OpenDataBot's PP Vizit-Service company page lists company code 32334408, foundation date 17.01.2003, Kremenchuk registration context, and a current leader different from Tamara in its 2026 snapshot.
• iplex.com.ua - ipLex's public company snapshot lists PP Vizit-Service code 32334408 at the Kremenchuk Pushkina Boulevard address and names Мельник Тамара Миколаївна as manager in that source snapshot.