AS39543 — TENNET-AS

AS39543 announces 16 IPv4 prefixes covering 7,424 addresses and 1 IPv6 prefixes.

About this network

The AS handle TENNET-AS is held by Tennet Telecom SRL.

What it's used for

• The address space carries residential customer traffic, evidenced by reverse DNS entries such as client-89-47-96-128.proinet.ro and netnames like RO-TENNET-20051129 and PROINET-LINK-TELECOMUNICATII-SRL.
• The network announces 7424 IPv4 addresses across 16 prefixes and 1 IPv6 prefix, while maintaining 29 observed neighbours, a ratio consistent with an access or eyeball network providing last-mile connectivity.
• Traffic from this AS consists of subscriber eyeballs for residential broadband services in Romania, including DSL and fibre connections managed by Tennet Telecom and its associated entities.

Notable

• Registrants align with the announcer, primarily listing Tennet Telecom SRL, with some prefixes registered to Tennet Link SRL and Proinet Link Telecomunicatii SRL, indicating internal segmentation or historical acquisitions.
• The address inventory is finely subdivided into multiple /24 and /23 blocks, reflecting a site-by-site or customer-segmented corporate estate rather than a single large contiguous allocation.

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

Announced prefixes

• 86.106.81.0/24
• 89.39.111.0/24
• 89.40.67.0/24
• 89.45.164.0/24
• 89.47.96.0/23
• 89.47.98.0/24
• 89.47.101.0/24
• 89.47.102.0/23
• 89.47.104.0/21
• 89.47.120.0/24
• 89.47.122.0/24
• 93.113.204.0/24
• 188.241.3.0/24
• 193.19.192.0/24
• 193.19.194.0/23
• 194.150.84.0/22
• 2001:4d18::/48

Upstream networks

• AS6204 TMRC GROUP SRL
• AS41494 Asociatia Interlan
• AS6939 Hurricane Electric LLC
• AS8708 DIGI ROMANIA S.A.
• AS24745 Orange Romania S.A.
• AS57463 NetIX Communications JSC
• AS24482 SG.GS
• AS20764 CJSC RASCOM

Downstream networks

• AS41984 Confort L&CC SRL
• AS41537 SC C Solution SRL
• AS30890 Tennet Telecom SRL
• AS60604 Primaria Municipiului Calarasi
• AS214265 Yako Telecom SRL

Adjacent networks

• AS6204 TMRC GROUP SRL
• AS41494 Asociatia Interlan
• AS41984 Confort L&CC SRL
• AS6939 Hurricane Electric LLC
• AS41537 SC C Solution SRL
• AS8708 DIGI ROMANIA S.A.
• AS30890 Tennet Telecom SRL
• AS60604 Primaria Municipiului Calarasi
• AS24482 SG.GS
• AS57463 NetIX Communications JSC
• AS20764 CJSC RASCOM
• AS24745 Orange Romania S.A.
• AS214265 Yako Telecom SRL

Internet exchanges

• InterLAN-IX — Bucharest, Romania