AS11313 — FANNIEMAE
AS11313 announces 18 IPv4 prefixes covering 6,144 addresses and 0 IPv6 prefixes.
About this network
FANNIEMAE is the Federal National Mortgage Association — Fannie Mae, the US government-sponsored enterprise that buys mortgages from lenders and packages them into securities. It is a shareholder-owned corporation under federal conservatorship, not a government agency, and its network reads as pure enterprise.
What it's used for
RIS sees 41 IPv4 prefixes, 10,496 addresses, no IPv6 and only 2 observed neighbours. The prefix count is high relative to the address count because the inventory is almost entirely /24s, drawn from two blocks: 167.133.0.0 and 198.204.128.0 upward. Every prefix in the pack is registered to Fannie Mae, under two netnames — MORNET and FNMA-CNETS. Registrant and origin agree throughout, so there is no third-party space and nothing broker-shaped in the inventory, however long the prefix list looks.
Notable
Forty-one prefixes announced to two neighbours is the shape that matters. A network that peers with two ASes is buying transit, not selling it, no matter how many routes it originates. What produces the long /24 list is not connectivity ambition but segmentation: a financial institution that keeps distinct, separately-routable public blocks for its data centres, its DMZs, and its lender-facing interfaces, because counterparties, regulators and firewall policies allowlist by source address and a stable per-function /24 is what makes that possible.
Interesting
The MORNET netname is corporate archaeology in the registry. Fannie Mae's lender-facing electronic delivery network carried that name for years, and the address blocks that served it still wear it — an internal system name outliving the system, which is a common fate for netnames and a reminder to read the org field rather than the label.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 167.133.165.0/24
- 167.133.169.0/24
- 167.133.184.0/24
- 167.133.200.0/22
- 167.133.204.0/23
- 167.133.208.0/24
- 167.133.216.0/23
- 198.204.129.0/24
- 198.204.135.0/24
- 198.204.152.0/24
- 198.204.155.0/24
- 198.204.165.0/24
- 198.204.166.0/24
- 198.204.171.0/24
- 198.204.183.0/24
- 198.204.190.0/23
- 198.204.192.0/24
- 198.204.202.0/24
Upstream networks
Adjacent networks
awaiting query
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