AS31857 — ZFP-ASN-1

Network type: residential

AS31857 announces 8 IPv4 prefixes covering 10,752 addresses and 1 IPv6 prefixes.

About this network

ZFP-ASN-1 is operated by Ziply Fiber, a regional fiber-optic internet service provider in the Pacific Northwest.

What it's used for

• The address space carries residential customer traffic, evidenced by reverse DNS entries like 69-28-43-254.cust.ptera.net and netnames such as ZFP-PTERA-IPV4-5.
• With 10,752 IPv4 addresses announced across 8 prefixes and only 1 observed neighbour, the high address-to-neighbour ratio indicates an access network rather than a transit provider.

Notable

• Registrants are split between Ziply Fiber and Ptera Inc., reflecting the March 2023 acquisition of Ptera by Ziply Fiber; netnames like VCN-PTERA-02 and PTERA-CGNT-NET-1 retain the former company's identity.
• The inventory includes a mix of /20, /21, /22, and /24 blocks, with the largest being 69.28.32.0/20, alongside a single IPv6 prefix 2604:3b80::/32.

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

Announced prefixes

• 23.157.48.0/24
• 38.94.100.0/22
• 66.117.64.0/21
• 69.28.32.0/20
• 141.193.60.0/22
• 162.213.180.0/22
• 199.127.112.0/22
• 216.229.183.0/24
• 2604:3b80::/32

Upstream networks

• AS20055 Wholesail networks LLC

Adjacent networks

• AS20055 Wholesail networks LLC