192.168.100.121 router login
To open the admin panel, type 192.168.100.121 into your browser's address bar. If the page does not load, this is probably not the gateway address on your network — see the checks below.
192.168.100.121 router passwords
Where to find them:
- The label on the underside or back of the router — most manufacturers print the default admin username, password and Wi-Fi key there.
- The quick-start card or manual that came in the box.
- Your ISP's account portal, if the device was supplied by them — many set a unique password per line rather than a shared default.
The credential record for this address is empty, so no username and password can be stated. If you reach a login prompt, the defaults belong to that specific hardware and are usually printed on its label or documented in the manual. Devices reached on a separate management subnet are often provider-configured, in which case the provider's documentation is the reliable source.
How to log in to your router
Type 192.168.100.121 into your browser's address bar and press Enter. Type it by hand rather than accepting an autocomplete suggestion, which often fills in a different address you visited before.
If the browser reports that it cannot reach 192.168.100.121, this is not the gateway address on your network. On Windows run ipconfig /all and read the Default Gateway line; on macOS open System Settings, Network, Details, TCP/IP; on Linux run ip route and read the address after "default via".
If the login page loads but rejects your credentials, and you have never changed them, use the defaults printed on the device's label. If they have been changed and nobody knows the new password, a factory reset is the only way back in.
If you do not know the password
Where the password is unknown, check for a local recovery procedure documented for the model before resetting, since management interfaces on a subnet like this sometimes have a separate service login. A factory reset removes all customisation, including any bridged or management configuration that put the device on this subnet, and returns the wireless name and key to their label defaults.
192.168.100.121 comes from 192.168.0.0/16, the private allocation of 65,536 addresses defined by 255.255.0.0 that consumer routers, hotspots and small office access points draw on by default. Being private, it is meaningful only inside the network that uses it, and identical addresses exist on countless unrelated networks at the same time.
What distinguishes it is the third octet. The 192.168.100.0/24 subnet, running 192.168.100.1 to 192.168.100.254 with 192.168.100.255 as broadcast, is a common choice for equipment kept separate from the main LAN: modems in bridge mode, management interfaces, IP cameras and guest segments often live there. Host 121 within that subnet is not a gateway position. Users searching for it are typically working out why a device answers on a different subnet from the rest of their network.
Whois information for 192.168.0.0/16
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2024, American Registry for Internet Numbers, Ltd.
#
NetRange: 192.168.0.0 - 192.168.255.255
CIDR: 192.168.0.0/16
NetName: PRIVATE-ADDRESS-CBLK-RFC1918-IANA-RESERVED
NetHandle: NET-192-168-0-0-1
Parent: NET192 (NET-192-0-0-0-0)
NetType: IANA Special Use
OriginAS:
Organization: Internet Assigned Numbers Authority (IANA)
RegDate: 1994-03-15
Updated: 2013-08-30
Comment: These addresses are in use by many millions of independently operated networks, which might be as small as a single computer connected to a home gateway, and are automatically configured in hundreds of millions of devices. They are only intended for use within a private context and traffic that needs to cross the Internet will need to use a different, unique address.
Comment:
Comment: These addresses can be used by anyone without any need to coordinate with IANA or an Internet registry. The traffic from these addresses does not come from ICANN or IANA. We are not the source of activity you may see on logs or in e-mail records. Please refer to http://www.iana.org/abuse/answers
Comment:
Comment: These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Best Current Practice document, RFC 1918 which can be found at:
Comment: http://datatracker.ietf.org/doc/rfc1918
Ref: https://rdap.arin.net/registry/ip/192.168.0.0
OrgName: Internet Assigned Numbers Authority
OrgId: IANA
Address: 12025 Waterfront Drive
Address: Suite 300
City: Los Angeles
StateProv: CA
PostalCode: 90094
Country: US
RegDate:
Updated: 2012-08-31
Ref: https://rdap.arin.net/registry/entity/IANA
OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName: ICANN
OrgAbusePhone: +1-310-301-5820
OrgAbuseEmail: abuse@iana.org
OrgAbuseRef: https://rdap.arin.net/registry/entity/IANA-IP-ARIN
OrgTechHandle: IANA-IP-ARIN
OrgTechName: ICANN
OrgTechPhone: +1-310-301-5820
OrgTechEmail: abuse@iana.org
OrgTechRef: https://rdap.arin.net/registry/entity/IANA-IP-ARIN
Other documented addresses in 192.168.100.0/24
The 192.168.100.0/24 subnet runs from 192.168.100.1 to 192.168.100.254, with 192.168.100.255 reserved as the broadcast address. These are the addresses in it we hold router login details for.
Most looked up in this subnet
All addresses we cover here
255 addresses in this subnet have a page; the most looked-up are listed here.