AS31205 — MF-SIB-AS

AS31205 announces 26 IPv4 prefixes covering 19,712 addresses and 3 IPv6 prefixes.

About this network

MF-SIB-AS is operated by PJSC MegaFon, a major Russian mobile and fixed-line telecommunications provider.

What it's used for

• The address space carries mobile and data center traffic, evidenced by netnames such as MF-SF-AS31205-MOB, MF-GDC, and MF-GDC-Yota-09112022.
• With 19,712 IPv4 addresses announced across 26 prefixes and only 1 observed neighbour, the high address-to-neighbour ratio indicates an access or eyeball network rather than a transit provider.

Notable

• Registrants consistently identify as "Mobile; GNOC East PJSC MegaFon" or "MegaFon PJSC - Internet Service Network Operation Center," aligning with the AS holder.
• The inventory is finely subdivided into numerous /21, /22, and /24 blocks, reflecting internal segmentation for different service types and geographic regions within the corporate estate.

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

Announced prefixes

• 31.173.242.0/23
• 31.173.244.0/22
• 37.29.86.0/23
• 46.232.200.0/24
• 46.232.202.0/23
• 78.25.92.0/22
• 83.149.48.0/22
• 83.169.248.0/21
• 85.26.227.0/24
• 85.26.228.0/23
• 85.26.230.0/24
• 128.204.67.0/24
• 178.176.48.0/24
• 178.176.240.0/21
• 178.178.200.0/24
• 185.210.142.0/23
• 188.162.0.0/21
• 188.162.8.0/22
• 188.162.12.0/23
• 188.162.78.0/23
• 188.162.81.0/24
• 188.162.82.0/23
• 188.162.85.0/24
• 188.162.87.0/24
• 188.162.88.0/21
• 188.170.240.0/22
• 2a03:d000:6500::/40
• 2a03:d000:67fe::/48
• 2a03:d000:6802::/48

Upstream networks

• AS31133 PJSC MegaFon

Adjacent networks

• AS31133 PJSC MegaFon