I thought this could be somewhat useful for this and related forums and websites. Of course, blocking these isn't going to be terribly effective, but might as well not make it any easier for them than it needs to be. This certainly isn't complete, and some of these may be unrelated businesses that have names similar to government organizations, there are probably several repeats, etc.
Drug Enforcement Administration EPIC (NET-155-96-0-0-1) 155.96.0.0 - 155.96.255.255
Drug Enforcement Administration SBCIS-10165-134157 (NET-65-69-94-64-1) 65.69.94.64 - 65.69.94.95
Drug Enforcement Adm DEAARLINGTON-120-22 (NET-4-21-120-24-1) 4.21.120.24 - 4.21.120.31
Drug Enforcement Adm DEALA-42-22 (NET-4-18-42-8-1) 4.18.42.8 - 4.18.42.15
Drug Enforcement Adm DEABOSTON-166-22 (NET-4-21-166-80-1) 4.21.166.80 - 4.21.166.87
Drug Enforcement Adm DEADALLAS-192-22 (NET-4-42-192-200-1) 4.42.192.200 - 4.42.192.207
Drug Enforcement Adm DEADENVER-97-22 (NET-4-18-97-240-1) 4.18.97.240 - 4.18.97.247
Drug Enforcement Adm DEADETROIT-170-22 (NET-4-2-170-144-1) 4.2.170.144 - 4.2.170.151
Drug Enforcement Adm DEAPR-209-22 (NET-4-42-209-184-1) 4.42.209.184 - 4.42.209.191
Drug Enforcement Adm DEAATLANTA-225-21 (NET-4-2-225-248-1) 4.2.225.248 - 4.2.225.255
Drug Enforcement Adm DEAMIAMI-209-26 (NET-4-42-209-224-1) 4.42.209.224 - 4.42.209.231
Drug Enforcement Adm DEANY-160-26 (NET-4-23-160-176-1) 4.23.160.176 - 4.23.160.183
Drug Enforcement Adm DEANEWARK-160-26 (NET-4-23-160-184-1) 4.23.160.184 - 4.23.160.191
Drug Enforcement Adm DEAPHILLY-64-26 (NET-4-43-64-160-1) 4.43.64.160 - 4.43.64.167
Drug Enforcement Adm DEAPHOENIX-160-26 (NET-4-37-160-112-1) 4.37.160.112 - 4.37.160.119
Drug Enforcement Adm DEAQUANTICO-122-26 (NET-4-21-122-8-1) 4.21.122.8 - 4.21.122.15
Drug Enforcement Adm DEASANDIEGO-32-26 (NET-4-43-32-200-1) 4.43.32.200 - 4.43.32.207
Drug Enforcement Adm DEASANFRAN-224-26 (NET-4-42-224-96-1) 4.42.224.96 - 4.42.224.103
Drug Enforcement Adm DEAMETAIRE-32-26 (NET-4-19-32-8-1) 4.19.32.8 - 4.19.32.15
Drug Enforcement Adm DEALORTON-122-26 (NET-4-21-122-16-1) 4.21.122.16 - 4.21.122.23
Drug Enforcement Adm DEASEATTLE-176-26 (NET-4-42-176-184-1) 4.42.176.184 - 4.42.176.191
Drug Enforcement Adm DEASTLOUIS-150-26 (NET-4-22-150-0-1) 4.22.150.0 - 4.22.150.7
Drug Enforcement Adm DEAWASH-122-26 (NET-4-21-122-24-1) 4.21.122.24 - 4.21.122.31
Drug Enforcement Adm DEACHICAGO-96-26 (NET-4-37-96-120-1) 4.37.96.120 - 4.37.96.127
Drug Enforcement Adm DEAELPASO-150-26 (NET-4-22-150-8-1) 4.22.150.8 - 4.22.150.15
Drug Enforcement Adm DEAHOUSTON-144-26 (NET-4-2-144-224-1) 4.2.144.224 - 4.2.144.231
Drug Enforcement Adm DEAELPASO2-140-25 (NET-4-22-140-136-1) 4.22.140.136 - 4.22.140.143
Drug Enforcement Adm DEAARLINGTON-148-20 (NET-4-21-148-144-1) 4.21.148.144 - 4.21.148.159
Drug Enforcement Admin SBCIS39608 (NET-63-195-218-104-1) 63.195.218.104 - 63.195.218.111
Drug Enforcement Admin SBCIS-101104-15320 (NET-66-127-156-24-1) 66.127.156.24 - 66.127.156.31
Drug Enforcement Admin SBC067114069024020530 (NET-67-114-69-24-1) 67.114.69.24 - 67.114.69.31
Drug Enforcement Admin DRUG-ENFORCEMENT-ADMIN (NET-75-150-82-40-1) 75.150.82.40 - 75.150.82.47
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-209-183-199-128-28 (NET-209-183-199-128-1) 209.183.199.128 - 209.183.199.143
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-209-183-199-144-28 (NET-209-183-199-144-1) 209.183.199.144 - 209.183.199.159
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-207-188-231-224-28 (NET-207-188-231-224-1) 207.188.231.224 - 207.188.231.239
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-207-188-224-20-30 (NET-207-188-224-20-1) 207.188.224.20 - 207.188.224.23
Drug Enforcement Administration SBCIS-10165-134157 (NET-65-69-94-64-1) 65.69.94.64 - 65.69.94.95
Drug Enforcement Agency NTHR-DEAVIEWRIDGE (NET-66-63-143-64-1) 66.63.143.64 - 66.63.143.79
DOJ - Drug Enforcement SBC07114622816829060209082335 (NET-71-146-228-168-1) 71.146.228.168 - 71.146.228.175
Federal Bureau of Investigatio SPRINTLINK (NET-65-166-188-16-1:65.166.188.16-65.166.188.23
Federal Bureau of Investigation SPRINTLINK (NET-65-170-186-64-1:65.170.186.64-65.170.186.127
Federal Bureau of SPRINTLINK (NET-65-173-188-0-1:65.173.188.0-65.173.189.255
Federal Bureau of Investigation SPRINTLINK (NET-65-174-230-32-1:65.174.230.32-65.174.230.47
Federal Bureau of Investigation FEDERA-200509260737496 (NET-66-55-58-16-1:66.55.58.16-66.55.58.23
Federal Bureau of Investigation - FBI Academy NCAVC (NET-192-84-170-0-1:192.84.170.0-192.84.170.255
Federal Bureau of Investigation - FBI Laboratory CHEMTOX (NET-198-190-209-0-1:198.190.209.0-198.190.209.255
Federal Bureau of Investigation FBI (NET-205-229-233-0-1:205.229.233.0-205.229.233.255
FBI - nehdata.org REON-CUST0-1234-1 (NET-66-51-66-48-1:66.51.66.48-66.51.66.55
FBi Buildings Inc. FON-349053235218762 (NET-208-13-76-0-1:208.13.76.0-208.13.76.15
FBI Criminal Justice Information Systems ITN (NET-153-31-0-0-1:153.31.0.0-153.31.255.255
FBI Tips FON-347376723295191 (NET-207-13-123-64-1:207.13.123.64-207.13.123.79
FBI-US-GOV FBI-US-GOV-00000001 (NET-204-11-0-0-1:204.11.0.0-204.11.3.255
FBI FBI (NET-69-27-9-144-1:69.27.9.144-69.27.9.151
FBI SBC067064154088020930 (NET-67-64-154-88-1:67.64.154.88-67.64.154.95
FBI SBC06918222500025050329110550 (NET-69-182-225-0-1:69.182.225.0-69.182.225.127
FBI SBC06917706804029040428143432 (NET-69-177-68-40-1:69.177.68.40-69.177.68.47
FBI COMSER-24-38-8-144 (NET-24-38-8-144-1:24.38.8.144-24.38.8.151
FBI MISC ACCT-050303012706 SBC06923613224829050303012725 (NET-69-236-132-248-1:69.236.132.248-69.236.132.255
FBI-050111002653 SBC06921518515229050111002658 (NET-69-215-185-152-1:69.215.185.152-69.215.185.159
FBI-050111114253 SBC06921607910429050111114257 (NET-69-216-79-104-1:69.216.79.104-69.216.79.111
FBI-050112053453 SBC06921625016829050112053456 (NET-69-216-250-168-1:69.216.250.168-69.216.250.175
Fbi-314 231-9467 SBC07024000123229040511174041 (NET-70-240-1-232-1:70.240.1.232-70.240.1.239
Federal Bureau Investigation FBI2-244-19 (NET-4-42-244-160-1:4.42.244.160-4.42.244.175
Federal Bureau of Investigation FBI (NET-205-229-233-0-1:205.229.233.0-205.229.233.255
Southern Light, LLC FBI-MOBILEAL-NET1 (NET-69-85-204-40-1:69.85.204.40-69.85.204.47
FBI Q0115-63-229-183-48 (NET-63-229-183-48-1) 63.229.183.48 - 63.229.183.55
FBI - nehdata.org REON-CUST0-1234-1 (NET-66-51-66-48-1) 66.51.66.48 - 66.51.66.55
FBI ACADEMY FBI-ACAD94-74-224 (NET-12-26-74-224-1) 12.26.74.224 - 12.26.74.255
FBI ACADEMY UU-65-216-233-160-D3 (NET-65-216-233-160-1) 65.216.233.160 - 65.216.233.191
FBI Criminal Justice Information Systems ITN (NET-153-31-0-0-1) 153.31.0.0 - 153.31.255.255
FBI DATA SERVICES UU-65-202-216-64-D6 (NET-65-202-216-64-1) 65.202.216.64 - 65.202.216.95
FBI Tips FON-347376723295191 (NET-207-13-123-64-1) 207.13.123.64 - 207.13.123.79
FBI FBI (NET-69-27-9-144-1) 69.27.9.144 - 69.27.9.151
FBI SBC067064154088020930 (NET-67-64-154-88-1) 67.64.154.88 - 67.64.154.95
FBI SBC06918222500025050329110550 (NET-69-182-225-0-1) 69.182.225.0 - 69.182.225.127
FBI SBC06917706804029040428143432 (NET-69-177-68-40-1) 69.177.68.40 - 69.177.68.47
FBI FBI (NET-69-27-9-144-1) 69.27.9.144 - 69.27.9.151
FBI HURRICANE-CE1676-5A1 (NET-64-71-145-16-1) 64.71.145.16 - 64.71.145.31
FBI HURRICANE-CE1676-881 (NET-65-49-28-64-1) 65.49.28.64 - 65.49.28.95
FBI - Little Rock- AR FBI---LITTLE-ROCK--AR (NET-70-90-227-0-1) 70.90.227.0 - 70.90.227.7
FBI -Nashville- FBI--NASHVILLE- (NET-75-146-9-192-1) 75.146.9.192 - 75.146.9.199
FBI Construction ITCD-66-0-182-200 (NET-66-0-182-200-1) 66.0.182.200 - 66.0.182.207
FBI Criminal Justice Information Systems UU-65-242-42-192-D2 (NET-65-242-42-192-1) 65.242.42.192 - 65.242.42.207
FBI Express FBI-EXPRESS (NET-96-31-237-184-1) 96.31.237.184 - 96.31.237.191
FBI Miami FBI-MIAMI (NET-70-89-99-64-1) 70.89.99.64 - 70.89.99.71
FBI MISC ACCT-050303012706 SBC06923613224829050303012725 (NET-69-236-132-248-1) 69.236.132.248 - 69.236.132.255
FEDERAL BUREAU OF INVESTGTN-071005115331 SBC-76-250-242-40-29-0710055341 (NET-76-250-242-40-1) 76.250.242.40 - 76.250.242.47
FEDERAL BUREAU OF INVESTGTN-071005230606 SBC-76-250-243-200-29-0710050616 (NET-76-250-243-200-1) 76.250.243.200 - 76.250.243.207
Federal Bureau of Investigation FEDERA-200509260737496 (NET-66-55-58-16-1) 66.55.58.16 - 66.55.58.23
Federal Bureau of Investigation NEXTWEB-64-186-173-192-29 (NET-64-186-173-192-1) 64.186.173.192 - 64.186.173.199
FEDERAL BUREAU OF INVESTIGATIONS SBC06417223122427051115151559 (NET-64-172-231-224-1) 64.172.231.224 - 64.172.231.255
FEDERAL BUREAU OF INVESTIGATIONS2 SBC21610020206427051130104924 (NET-216-100-202-64-1) 216.100.202.64 - 216.100.202.95
Dept Of Justice SBC067117073184020523 (NET-67-117-73-184-1) 67.117.73.184 - 67.117.73.191
Dept of Justice - ABC Bldg. NCIH-2074116-24A (NET-207-4-116-24-1) 207.4.116.24 - 207.4.116.31
DEPT JUSTICE STE 7000-041116082521 SBC06923311124829041116082523 (NET-69-233-111-248-1) 69.233.111.248 - 69.233.111.255
Dept Of Justice SBC067117073184020523 (NET-67-117-73-184-1) 67.117.73.184 - 67.117.73.191
Dept of Justice - ABC Bldg. NCIH-2074116-24A (NET-207-4-116-24-1) 207.4.116.24 - 207.4.116.31
DEPT OF JUSTICE-070410203222 SBC-76-193-39-72-29-0704103231 (NET-76-193-39-72-1) 76.193.39.72 - 76.193.39.79
DEPT OF JUSTICE-070621105224 SBC-76-236-17-144-29-0706215234 (NET-76-236-17-144-1) 76.236.17.144 - 76.236.17.151
Federal Law Enforcement Training Center SPRINTLINK (NET-63-165-202-0-1:63.165.202.0-63.165.202.255
Federal Law Enforcement Training Center SPRINTLINK (NET-63-169-135-0-1:63.169.135.0-63.169.135.255
Federal Law Enforcement Training Center SPRINTLINK (NET-204-250-118-192-1:204.250.118.192-204.250.118.207
Federal Law Enforcement Training Center SPRINTLINK (NET-204-250-118-208-1:204.250.118.208-204.250.118.223
Interpol BRW-10068-INTERPOL (NET-67-99-78-64-1) 67.99.78.64 - 67.99.78.127
Interpol BRW-10067-INTERPOL (NET-67-99-78-0-1) 67.99.78.0 - 67.99.78.63
Interpol BRW-10069-INTERPOL (NET-67-99-78-128-1) 67.99.78.128 - 67.99.78.191
Interpol BRW-10070-INTERPOL (NET-216-142-221-0-1) 216.142.221.0 - 216.142.221.63
https://ws.arin.net/whois/
FBI branches (some of these ips don't seem to appear above)
hxxp://www.fbi.gov/contact/fo/fo.htm (open in a new window to avoid referrer tracking)
Drug Enforcement Administration EPIC (NET-155-96-0-0-1) 155.96.0.0 - 155.96.255.255
Drug Enforcement Administration SBCIS-10165-134157 (NET-65-69-94-64-1) 65.69.94.64 - 65.69.94.95
Drug Enforcement Adm DEAARLINGTON-120-22 (NET-4-21-120-24-1) 4.21.120.24 - 4.21.120.31
Drug Enforcement Adm DEALA-42-22 (NET-4-18-42-8-1) 4.18.42.8 - 4.18.42.15
Drug Enforcement Adm DEABOSTON-166-22 (NET-4-21-166-80-1) 4.21.166.80 - 4.21.166.87
Drug Enforcement Adm DEADALLAS-192-22 (NET-4-42-192-200-1) 4.42.192.200 - 4.42.192.207
Drug Enforcement Adm DEADENVER-97-22 (NET-4-18-97-240-1) 4.18.97.240 - 4.18.97.247
Drug Enforcement Adm DEADETROIT-170-22 (NET-4-2-170-144-1) 4.2.170.144 - 4.2.170.151
Drug Enforcement Adm DEAPR-209-22 (NET-4-42-209-184-1) 4.42.209.184 - 4.42.209.191
Drug Enforcement Adm DEAATLANTA-225-21 (NET-4-2-225-248-1) 4.2.225.248 - 4.2.225.255
Drug Enforcement Adm DEAMIAMI-209-26 (NET-4-42-209-224-1) 4.42.209.224 - 4.42.209.231
Drug Enforcement Adm DEANY-160-26 (NET-4-23-160-176-1) 4.23.160.176 - 4.23.160.183
Drug Enforcement Adm DEANEWARK-160-26 (NET-4-23-160-184-1) 4.23.160.184 - 4.23.160.191
Drug Enforcement Adm DEAPHILLY-64-26 (NET-4-43-64-160-1) 4.43.64.160 - 4.43.64.167
Drug Enforcement Adm DEAPHOENIX-160-26 (NET-4-37-160-112-1) 4.37.160.112 - 4.37.160.119
Drug Enforcement Adm DEAQUANTICO-122-26 (NET-4-21-122-8-1) 4.21.122.8 - 4.21.122.15
Drug Enforcement Adm DEASANDIEGO-32-26 (NET-4-43-32-200-1) 4.43.32.200 - 4.43.32.207
Drug Enforcement Adm DEASANFRAN-224-26 (NET-4-42-224-96-1) 4.42.224.96 - 4.42.224.103
Drug Enforcement Adm DEAMETAIRE-32-26 (NET-4-19-32-8-1) 4.19.32.8 - 4.19.32.15
Drug Enforcement Adm DEALORTON-122-26 (NET-4-21-122-16-1) 4.21.122.16 - 4.21.122.23
Drug Enforcement Adm DEASEATTLE-176-26 (NET-4-42-176-184-1) 4.42.176.184 - 4.42.176.191
Drug Enforcement Adm DEASTLOUIS-150-26 (NET-4-22-150-0-1) 4.22.150.0 - 4.22.150.7
Drug Enforcement Adm DEAWASH-122-26 (NET-4-21-122-24-1) 4.21.122.24 - 4.21.122.31
Drug Enforcement Adm DEACHICAGO-96-26 (NET-4-37-96-120-1) 4.37.96.120 - 4.37.96.127
Drug Enforcement Adm DEAELPASO-150-26 (NET-4-22-150-8-1) 4.22.150.8 - 4.22.150.15
Drug Enforcement Adm DEAHOUSTON-144-26 (NET-4-2-144-224-1) 4.2.144.224 - 4.2.144.231
Drug Enforcement Adm DEAELPASO2-140-25 (NET-4-22-140-136-1) 4.22.140.136 - 4.22.140.143
Drug Enforcement Adm DEAARLINGTON-148-20 (NET-4-21-148-144-1) 4.21.148.144 - 4.21.148.159
Drug Enforcement Admin SBCIS39608 (NET-63-195-218-104-1) 63.195.218.104 - 63.195.218.111
Drug Enforcement Admin SBCIS-101104-15320 (NET-66-127-156-24-1) 66.127.156.24 - 66.127.156.31
Drug Enforcement Admin SBC067114069024020530 (NET-67-114-69-24-1) 67.114.69.24 - 67.114.69.31
Drug Enforcement Admin DRUG-ENFORCEMENT-ADMIN (NET-75-150-82-40-1) 75.150.82.40 - 75.150.82.47
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-209-183-199-128-28 (NET-209-183-199-128-1) 209.183.199.128 - 209.183.199.143
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-209-183-199-144-28 (NET-209-183-199-144-1) 209.183.199.144 - 209.183.199.159
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-207-188-231-224-28 (NET-207-188-231-224-1) 207.188.231.224 - 207.188.231.239
DRUG ENFORCEMENT ADMIN-DJDEA-WD-08-0006 (D) NET-207-188-224-20-30 (NET-207-188-224-20-1) 207.188.224.20 - 207.188.224.23
Drug Enforcement Administration SBCIS-10165-134157 (NET-65-69-94-64-1) 65.69.94.64 - 65.69.94.95
Drug Enforcement Agency NTHR-DEAVIEWRIDGE (NET-66-63-143-64-1) 66.63.143.64 - 66.63.143.79
DOJ - Drug Enforcement SBC07114622816829060209082335 (NET-71-146-228-168-1) 71.146.228.168 - 71.146.228.175
Federal Bureau of Investigatio SPRINTLINK (NET-65-166-188-16-1:65.166.188.16-65.166.188.23
Federal Bureau of Investigation SPRINTLINK (NET-65-170-186-64-1:65.170.186.64-65.170.186.127
Federal Bureau of SPRINTLINK (NET-65-173-188-0-1:65.173.188.0-65.173.189.255
Federal Bureau of Investigation SPRINTLINK (NET-65-174-230-32-1:65.174.230.32-65.174.230.47
Federal Bureau of Investigation FEDERA-200509260737496 (NET-66-55-58-16-1:66.55.58.16-66.55.58.23
Federal Bureau of Investigation - FBI Academy NCAVC (NET-192-84-170-0-1:192.84.170.0-192.84.170.255
Federal Bureau of Investigation - FBI Laboratory CHEMTOX (NET-198-190-209-0-1:198.190.209.0-198.190.209.255
Federal Bureau of Investigation FBI (NET-205-229-233-0-1:205.229.233.0-205.229.233.255
FBI - nehdata.org REON-CUST0-1234-1 (NET-66-51-66-48-1:66.51.66.48-66.51.66.55
FBi Buildings Inc. FON-349053235218762 (NET-208-13-76-0-1:208.13.76.0-208.13.76.15
FBI Criminal Justice Information Systems ITN (NET-153-31-0-0-1:153.31.0.0-153.31.255.255
FBI Tips FON-347376723295191 (NET-207-13-123-64-1:207.13.123.64-207.13.123.79
FBI-US-GOV FBI-US-GOV-00000001 (NET-204-11-0-0-1:204.11.0.0-204.11.3.255
FBI FBI (NET-69-27-9-144-1:69.27.9.144-69.27.9.151
FBI SBC067064154088020930 (NET-67-64-154-88-1:67.64.154.88-67.64.154.95
FBI SBC06918222500025050329110550 (NET-69-182-225-0-1:69.182.225.0-69.182.225.127
FBI SBC06917706804029040428143432 (NET-69-177-68-40-1:69.177.68.40-69.177.68.47
FBI COMSER-24-38-8-144 (NET-24-38-8-144-1:24.38.8.144-24.38.8.151
FBI MISC ACCT-050303012706 SBC06923613224829050303012725 (NET-69-236-132-248-1:69.236.132.248-69.236.132.255
FBI-050111002653 SBC06921518515229050111002658 (NET-69-215-185-152-1:69.215.185.152-69.215.185.159
FBI-050111114253 SBC06921607910429050111114257 (NET-69-216-79-104-1:69.216.79.104-69.216.79.111
FBI-050112053453 SBC06921625016829050112053456 (NET-69-216-250-168-1:69.216.250.168-69.216.250.175
Fbi-314 231-9467 SBC07024000123229040511174041 (NET-70-240-1-232-1:70.240.1.232-70.240.1.239
Federal Bureau Investigation FBI2-244-19 (NET-4-42-244-160-1:4.42.244.160-4.42.244.175
Federal Bureau of Investigation FBI (NET-205-229-233-0-1:205.229.233.0-205.229.233.255
Southern Light, LLC FBI-MOBILEAL-NET1 (NET-69-85-204-40-1:69.85.204.40-69.85.204.47
FBI Q0115-63-229-183-48 (NET-63-229-183-48-1) 63.229.183.48 - 63.229.183.55
FBI - nehdata.org REON-CUST0-1234-1 (NET-66-51-66-48-1) 66.51.66.48 - 66.51.66.55
FBI ACADEMY FBI-ACAD94-74-224 (NET-12-26-74-224-1) 12.26.74.224 - 12.26.74.255
FBI ACADEMY UU-65-216-233-160-D3 (NET-65-216-233-160-1) 65.216.233.160 - 65.216.233.191
FBI Criminal Justice Information Systems ITN (NET-153-31-0-0-1) 153.31.0.0 - 153.31.255.255
FBI DATA SERVICES UU-65-202-216-64-D6 (NET-65-202-216-64-1) 65.202.216.64 - 65.202.216.95
FBI Tips FON-347376723295191 (NET-207-13-123-64-1) 207.13.123.64 - 207.13.123.79
FBI FBI (NET-69-27-9-144-1) 69.27.9.144 - 69.27.9.151
FBI SBC067064154088020930 (NET-67-64-154-88-1) 67.64.154.88 - 67.64.154.95
FBI SBC06918222500025050329110550 (NET-69-182-225-0-1) 69.182.225.0 - 69.182.225.127
FBI SBC06917706804029040428143432 (NET-69-177-68-40-1) 69.177.68.40 - 69.177.68.47
FBI FBI (NET-69-27-9-144-1) 69.27.9.144 - 69.27.9.151
FBI HURRICANE-CE1676-5A1 (NET-64-71-145-16-1) 64.71.145.16 - 64.71.145.31
FBI HURRICANE-CE1676-881 (NET-65-49-28-64-1) 65.49.28.64 - 65.49.28.95
FBI - Little Rock- AR FBI---LITTLE-ROCK--AR (NET-70-90-227-0-1) 70.90.227.0 - 70.90.227.7
FBI -Nashville- FBI--NASHVILLE- (NET-75-146-9-192-1) 75.146.9.192 - 75.146.9.199
FBI Construction ITCD-66-0-182-200 (NET-66-0-182-200-1) 66.0.182.200 - 66.0.182.207
FBI Criminal Justice Information Systems UU-65-242-42-192-D2 (NET-65-242-42-192-1) 65.242.42.192 - 65.242.42.207
FBI Express FBI-EXPRESS (NET-96-31-237-184-1) 96.31.237.184 - 96.31.237.191
FBI Miami FBI-MIAMI (NET-70-89-99-64-1) 70.89.99.64 - 70.89.99.71
FBI MISC ACCT-050303012706 SBC06923613224829050303012725 (NET-69-236-132-248-1) 69.236.132.248 - 69.236.132.255
FEDERAL BUREAU OF INVESTGTN-071005115331 SBC-76-250-242-40-29-0710055341 (NET-76-250-242-40-1) 76.250.242.40 - 76.250.242.47
FEDERAL BUREAU OF INVESTGTN-071005230606 SBC-76-250-243-200-29-0710050616 (NET-76-250-243-200-1) 76.250.243.200 - 76.250.243.207
Federal Bureau of Investigation FEDERA-200509260737496 (NET-66-55-58-16-1) 66.55.58.16 - 66.55.58.23
Federal Bureau of Investigation NEXTWEB-64-186-173-192-29 (NET-64-186-173-192-1) 64.186.173.192 - 64.186.173.199
FEDERAL BUREAU OF INVESTIGATIONS SBC06417223122427051115151559 (NET-64-172-231-224-1) 64.172.231.224 - 64.172.231.255
FEDERAL BUREAU OF INVESTIGATIONS2 SBC21610020206427051130104924 (NET-216-100-202-64-1) 216.100.202.64 - 216.100.202.95
Dept Of Justice SBC067117073184020523 (NET-67-117-73-184-1) 67.117.73.184 - 67.117.73.191
Dept of Justice - ABC Bldg. NCIH-2074116-24A (NET-207-4-116-24-1) 207.4.116.24 - 207.4.116.31
DEPT JUSTICE STE 7000-041116082521 SBC06923311124829041116082523 (NET-69-233-111-248-1) 69.233.111.248 - 69.233.111.255
Dept Of Justice SBC067117073184020523 (NET-67-117-73-184-1) 67.117.73.184 - 67.117.73.191
Dept of Justice - ABC Bldg. NCIH-2074116-24A (NET-207-4-116-24-1) 207.4.116.24 - 207.4.116.31
DEPT OF JUSTICE-070410203222 SBC-76-193-39-72-29-0704103231 (NET-76-193-39-72-1) 76.193.39.72 - 76.193.39.79
DEPT OF JUSTICE-070621105224 SBC-76-236-17-144-29-0706215234 (NET-76-236-17-144-1) 76.236.17.144 - 76.236.17.151
Federal Law Enforcement Training Center SPRINTLINK (NET-63-165-202-0-1:63.165.202.0-63.165.202.255
Federal Law Enforcement Training Center SPRINTLINK (NET-63-169-135-0-1:63.169.135.0-63.169.135.255
Federal Law Enforcement Training Center SPRINTLINK (NET-204-250-118-192-1:204.250.118.192-204.250.118.207
Federal Law Enforcement Training Center SPRINTLINK (NET-204-250-118-208-1:204.250.118.208-204.250.118.223
Interpol BRW-10068-INTERPOL (NET-67-99-78-64-1) 67.99.78.64 - 67.99.78.127
Interpol BRW-10067-INTERPOL (NET-67-99-78-0-1) 67.99.78.0 - 67.99.78.63
Interpol BRW-10069-INTERPOL (NET-67-99-78-128-1) 67.99.78.128 - 67.99.78.191
Interpol BRW-10070-INTERPOL (NET-216-142-221-0-1) 216.142.221.0 - 216.142.221.63
https://ws.arin.net/whois/
FBI branches (some of these ips don't seem to appear above)
hxxp://www.fbi.gov/contact/fo/fo.htm (open in a new window to avoid referrer tracking)


