CGNAT
BSNL IP Address & CGNAT Check
AS9829 is BSNL-NIB, Bharat Sanchar Nigam’s national backbone, in this site’s list checked 13 Oct 2026. A lookup that shows AS9829 means BSNL announces the address. It does not mean the connection is static, and it does not mean it is shared. Those are properties of the plan and the circle.
The test on Bharat Fiber
Use the fiber connection, not a phone hotspot. Open the CGNAT check and the router’s WAN status.
- Matching public IPv4 addresses mean you are not behind CGNAT right now. Write down whether the address survives a router reboot. If it changes, it is public and dynamic.
- A WAN address in 100.64.0.0/10 or another private range, with a different address on this site, means NAT in front of the router.
- If an IPv6 address shows up, note the prefix. Some services you want to reach can use IPv6 without a public IPv4.
Asking the circle
Ask the exchange or the self-care portal for “static IP” on your FTTH connection. Bharat Fiber circles have offered that add-on. The tariff is set locally. Anyone quoting a single national price is guessing, including this website, which is why it does not. Keep the ticket.
IPv6, Tailscale, and Cloudflare Tunnel are described on the CGNAT page. Use them to reach your own machines. They do not satisfy a third party that insists on a stable public IPv4.
ASNs and prefixes
These samples are from RIPEstat’s announced-prefixes API on 19 Oct 2026 (the data source). An announcement says the network is willing to receive traffic for that block. It does not say which city the block is used in, and it does not say whether your plan is behind CGNAT.
AS9829 BSNL-NIB
On 19 Oct 2026, RIPEstat listed 1,907 IPv4 prefixes and 1,144 IPv6 prefixes announced by this ASN. The largest examples that day included 117.193.0.0/16, 117.192.0.0/16, 61.0.0.0/16 and 2001:4490:e00::/39, 2001:4490:7900::/40. More-specifics move. Check RIPEstat or Hurricane Electric for the list as of today.
Other networks: Jio, Airtel, ACT Fibernet, Vi. The shared checker is the CGNAT page. Indian context for all of these networks is on my IP address in India.
Questions
Does BSNL use CGNAT?
BSNL’s backbone in this site’s list is AS9829 (BSNL-NIB). Whether your FTTH line is behind CGNAT is a per-connection fact. Compare the router WAN address with the public IPv4.
Does BSNL sell a static IP?
Bharat Fiber circles have offered a static IPv4 option. The tariff is local and changes. Ask the exchange or the self-care portal and get the price in writing.
What is BSNL-NIB?
It is the registry name this site has for AS9829, Bharat Sanchar Nigam’s national backbone.