192.168.1.21 router login
To open the admin panel, type 192.168.1.21 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.
192.168.1.21 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.
No login pair is documented for 192.168.1.21, and the honest answer is that none could be: the address is shared by innumerable unrelated networks and the device behind it differs on each. Consumer and small business appliances ship with their own defaults, printed either on a sticker on the case or in the first pages of the setup guide, and many modern units use a random password unique to that unit. Check there before trying anything generic.
How to log in to your router
Type 192.168.1.21 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 192.168.1.21, 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
If the device at this address refuses every password, a factory reset will clear it, at the cost of returning the unit to its shipped state. Expect to lose the wireless network name and passphrase, any port forwarding or firewall rules, static leases and account settings, and expect the address itself to change — a reset device usually reverts to a default address, so it may no longer be at .21. On most hardware the reset is a small recessed button held for ten to thirty seconds while powered.
The address 192.168.1.21 is a host inside 192.168.1.0/24, the subnet where usable addresses run from 192.168.1.1 to 192.168.1.254 and 192.168.1.255 carries broadcast traffic. Its parent, 192.168.0.0/16, is masked 255.255.0.0, contains 65,536 addresses, and is the consumer block that nearly every home router, mobile hotspot and small office access point uses for its default gateway.
Nothing in the numbering marks .21 as special. It is neither the first nor the last usable address, so it is not where a router would normally place its own interface. In practice a host at this position is a leased or reserved client: many routers begin their DHCP pool somewhere in the low tens or at .100, leaving the twenties either as early leases or as a hand-reserved slot for something that needs a stable address, such as a print server or a home automation hub.
The usual reason for looking this up is a mismatch between expectation and reality — an interface that will not load, an address seen on a device list, or a static assignment that has stopped working after a change to the 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 192.168.1.0/24
The 192.168.1.0/24 subnet runs from 192.168.1.1 to 192.168.1.254, with 192.168.1.255 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.