Country stats for last year of data

For these country-level stats, the most recent test from each client address is examined within aggregated IP blocks (/24 for IPv4 and /40 for IPv6). If the most recent test in an IP block shows spoofing, the IP block is considered to allow spoofing. If ALL clients indicate blocking, the IP block is considered to block spoofing. (It is considered NAT blocking if there are no non-NAT tests found.) If some clients showed spoofing but the most recent tests show blocking (and there's no evidence of a change in blocking policy), then the IP block is considered "inconsistent". On the map, inconsistent results are counted as spoofing for simplicity.

Country	Client IP blocks	Spoofing IP blocks	Blocking IP blocks		Inconsistent IP blocks	Client ASNs	Spoofing ASNs
			Non-NAT	NAT
bra (Brazil)	2143	414 (19.3%)	277 (12.9%)	1429 (66.7%)	23 (1.1%)	464	222 (47.8%)
ind (India)	1258	227 (18.0%)	159 (12.6%)	872 (69.3%)	0 (0.0%)	70	24 (34.3%)
usa (United States)	2646	112 (4.2%)	680 (25.7%)	1852 (70.0%)	2 (0.1%)	322	65 (20.2%)
isr (Israel)	243	73 (30.0%)	72 (29.6%)	98 (40.3%)	0 (0.0%)	11	5 (45.5%)
arg (Argentina)	132	57 (43.2%)	10 (7.6%)	64 (48.5%)	1 (0.8%)	23	7 (30.4%)
zaf (South Africa)	191	41 (21.5%)	8 (4.2%)	142 (74.3%)	0 (0.0%)	42	17 (40.5%)
rus (Russian Federation)	267	38 (14.2%)	37 (13.9%)	192 (71.9%)	0 (0.0%)	69	18 (26.1%)
tha (Thailand)	256	36 (14.1%)	16 (6.3%)	204 (79.7%)	0 (0.0%)	25	6 (24.0%)
twn (Taiwan)	221	34 (15.4%)	31 (14.0%)	155 (70.1%)	1 (0.5%)	19	4 (21.1%)
are (United Arab Emirates)	57	29 (50.9%)	4 (7.0%)	24 (42.1%)	0 (0.0%)	7	2 (28.6%)
egy (Egypt)	128	27 (21.1%)	1 (0.8%)	100 (78.1%)	0 (0.0%)	6	3 (50.0%)
tur (Turkey)	622	25 (4.0%)	10 (1.6%)	587 (94.4%)	0 (0.0%)	35	9 (25.7%)
bgd (Bangladesh)	60	22 (36.7%)	6 (10.0%)	32 (53.3%)	0 (0.0%)	26	9 (34.6%)
kaz (Kazakhstan)	49	21 (42.9%)	0 (0.0%)	28 (57.1%)	0 (0.0%)	4	1 (25.0%)
aus (Australia)	435	20 (4.6%)	40 (9.2%)	375 (86.2%)	0 (0.0%)	36	8 (22.2%)
pol (Poland)	144	19 (13.2%)	16 (11.1%)	109 (75.7%)	0 (0.0%)	51	13 (25.5%)
tun (Tunisia)	31	19 (61.3%)	0 (0.0%)	12 (38.7%)	0 (0.0%)	6	1 (16.7%)
nld (Netherlands)	291	18 (6.2%)	89 (30.6%)	184 (63.2%)	0 (0.0%)	69	8 (11.6%)
uga (Uganda)	36	17 (47.2%)	1 (2.8%)	18 (50.0%)	0 (0.0%)	8	3 (37.5%)
ita (Italy)	368	16 (4.3%)	34 (9.2%)	318 (86.4%)	0 (0.0%)	48	11 (22.9%)
can (Canada)	322	15 (4.7%)	64 (19.9%)	243 (75.5%)	0 (0.0%)	56	10 (17.9%)
vnm (Vietnam)	79	15 (19.0%)	6 (7.6%)	57 (72.2%)	1 (1.3%)	9	4 (44.4%)
kor (South Korea)	330	14 (4.2%)	188 (57.0%)	128 (38.8%)	0 (0.0%)	18	5 (27.8%)
chn (China)	393	13 (3.3%)	111 (28.2%)	268 (68.2%)	1 (0.3%)	27	9 (33.3%)
deu (Germany)	1006	13 (1.3%)	255 (25.3%)	738 (73.4%)	0 (0.0%)	88	12 (13.6%)
jpn (Japan)	233	13 (5.6%)	41 (17.6%)	178 (76.4%)	1 (0.4%)	43	9 (20.9%)
ago (Angola)	54	12 (22.2%)	1 (1.9%)	41 (75.9%)	0 (0.0%)	6	5 (83.3%)
pak (Pakistan)	89	12 (13.5%)	3 (3.4%)	74 (83.1%)	0 (0.0%)	17	5 (29.4%)
gbr (United Kingdom)	625	9 (1.4%)	107 (17.1%)	508 (81.3%)	1 (0.2%)	71	8 (11.3%)
swe (Sweden)	129	9 (7.0%)	19 (14.7%)	100 (77.5%)	1 (0.8%)	36	7 (19.4%)
mex (Mexico)	449	8 (1.8%)	29 (6.5%)	412 (91.8%)	0 (0.0%)	23	6 (26.1%)
bfa (Burkina Faso)	16	7 (43.8%)	2 (12.5%)	7 (43.8%)	0 (0.0%)	4	2 (50.0%)
esp (Spain)	193	7 (3.6%)	13 (6.7%)	173 (89.6%)	0 (0.0%)	33	5 (15.2%)
idn (Indonesia)	38	7 (18.4%)	7 (18.4%)	24 (63.2%)	0 (0.0%)	20	6 (30.0%)
ken (Kenya)	45	7 (15.6%)	0 (0.0%)	38 (84.4%)	0 (0.0%)	11	7 (63.6%)
fra (France)	287	6 (2.1%)	53 (18.5%)	228 (79.4%)	0 (0.0%)	38	5 (13.2%)
hkg (Hong Kong)	100	6 (6.0%)	28 (28.0%)	66 (66.0%)	0 (0.0%)	22	4 (18.2%)
hun (Hungary)	147	6 (4.1%)	9 (6.1%)	132 (89.8%)	0 (0.0%)	15	5 (33.3%)
rou (Romania)	108	6 (5.6%)	21 (19.4%)	81 (75.0%)	0 (0.0%)	17	3 (17.6%)
phl (Philippines)	133	5 (3.8%)	11 (8.3%)	117 (88.0%)	0 (0.0%)	10	4 (40.0%)
svk (Slovak Republic)	34	5 (14.7%)	4 (11.8%)	25 (73.5%)	0 (0.0%)	17	5 (29.4%)
ukr (Ukraine)	51	5 (9.8%)	13 (25.5%)	33 (64.7%)	0 (0.0%)	38	5 (13.2%)
ury (Uruguay)	9	5 (55.6%)	1 (11.1%)	3 (33.3%)	0 (0.0%)	8	5 (62.5%)
bgr (Bulgaria)	44	4 (9.1%)	5 (11.4%)	35 (79.5%)	0 (0.0%)	23	3 (13.0%)
ecu (Ecuador)	35	4 (11.4%)	4 (11.4%)	27 (77.1%)	0 (0.0%)	13	2 (15.4%)
hrv (Croatia)	30	4 (13.3%)	0 (0.0%)	26 (86.7%)	0 (0.0%)	6	3 (50.0%)
irn (Iran)	143	4 (2.8%)	4 (2.8%)	135 (94.4%)	0 (0.0%)	11	1 (9.1%)
mys (Malaysia)	164	4 (2.4%)	15 (9.1%)	145 (88.4%)	0 (0.0%)	14	3 (21.4%)
npl (Nepal)	44	4 (9.1%)	8 (18.2%)	32 (72.7%)	0 (0.0%)	10	3 (30.0%)
pry (Paraguay)	9	4 (44.4%)	0 (0.0%)	5 (55.6%)	0 (0.0%)	3	3 (100.0%)
bih (Bosnia and Herzegovina)	45	3 (6.7%)	1 (2.2%)	40 (88.9%)	1 (2.2%)	4	1 (25.0%)
che (Switzerland)	89	3 (3.4%)	18 (20.2%)	68 (76.4%)	0 (0.0%)	22	2 (9.1%)
chl (Chile)	29	3 (10.3%)	2 (6.9%)	24 (82.8%)	0 (0.0%)	13	3 (23.1%)
cze (Czech Republic)	27	3 (11.1%)	1 (3.7%)	23 (85.2%)	0 (0.0%)	20	3 (15.0%)
dnk (Denmark)	35	3 (8.6%)	7 (20.0%)	25 (71.4%)	0 (0.0%)	16	3 (18.8%)
gha (Ghana)	36	3 (8.3%)	0 (0.0%)	33 (91.7%)	0 (0.0%)	4	2 (50.0%)
hti (Haiti)	9	3 (33.3%)	0 (0.0%)	6 (66.7%)	0 (0.0%)	3	2 (66.7%)
mus (Mauritius)	113	3 (2.7%)	2 (1.8%)	108 (95.6%)	0 (0.0%)	8	3 (37.5%)
prt (Portugal)	117	3 (2.6%)	17 (14.5%)	97 (82.9%)	0 (0.0%)	14	2 (14.3%)
sdn (Sudan)	19	3 (15.8%)	1 (5.3%)	15 (78.9%)	0 (0.0%)	4	2 (50.0%)
aut (Austria)	109	2 (1.8%)	10 (9.2%)	97 (89.0%)	0 (0.0%)	21	2 (9.5%)
bel (Belgium)	85	2 (2.4%)	24 (28.2%)	59 (69.4%)	0 (0.0%)	11	2 (18.2%)
col (Colombia)	21	2 (9.5%)	3 (14.3%)	16 (76.2%)	0 (0.0%)	13	2 (15.4%)
cyp (Cyprus)	16	2 (12.5%)	2 (12.5%)	12 (75.0%)	0 (0.0%)	10	1 (10.0%)
dom (Dominican Republic)	43	2 (4.7%)	0 (0.0%)	41 (95.3%)	0 (0.0%)	6	2 (33.3%)
khm (Cambodia, Kingdom of)	5	2 (40.0%)	0 (0.0%)	3 (60.0%)	0 (0.0%)	3	2 (66.7%)
ltu (Lithuania)	19	2 (10.5%)	2 (10.5%)	15 (78.9%)	0 (0.0%)	10	2 (20.0%)
lux (Luxembourg)	42	2 (4.8%)	6 (14.3%)	34 (81.0%)	0 (0.0%)	4	1 (25.0%)
mdv (Maldives)	15	2 (13.3%)	2 (13.3%)	11 (73.3%)	0 (0.0%)	3	1 (33.3%)
sgp (Singapore)	51	2 (3.9%)	12 (23.5%)	37 (72.5%)	0 (0.0%)	21	2 (9.5%)
srb (Serbia)	20	2 (10.0%)	2 (10.0%)	16 (80.0%)	0 (0.0%)	9	2 (22.2%)
tza (Tanzania)	6	2 (33.3%)	0 (0.0%)	4 (66.7%)	0 (0.0%)	5	1 (20.0%)
abw (Aruba)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
arm (Armenia)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
ben (Benin)	10	1 (10.0%)	0 (0.0%)	9 (90.0%)	0 (0.0%)	4	1 (25.0%)
bol (Bolivia)	17	1 (5.9%)	3 (17.6%)	13 (76.5%)	0 (0.0%)	2	1 (50.0%)
btn (Bhutan)	10	1 (10.0%)	5 (50.0%)	4 (40.0%)	0 (0.0%)	4	1 (25.0%)
cri (Costa Rica)	16	1 (6.3%)	1 (6.3%)	14 (87.5%)	0 (0.0%)	9	1 (11.1%)
gab (Gabon)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
geo (Georgia)	16	1 (6.3%)	1 (6.3%)	14 (87.5%)	0 (0.0%)	3	1 (33.3%)
gtm (Guatemala)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
irl (Ireland)	46	1 (2.2%)	12 (26.1%)	33 (71.7%)	0 (0.0%)	13	1 (7.7%)
isl (Iceland)	10	1 (10.0%)	4 (40.0%)	5 (50.0%)	0 (0.0%)	6	1 (16.7%)
jor (Jordan)	10	1 (10.0%)	1 (10.0%)	8 (80.0%)	0 (0.0%)	1	1 (100.0%)
mda (Moldova, Republic of)	16	1 (6.3%)	1 (6.3%)	14 (87.5%)	0 (0.0%)	6	1 (16.7%)
mlt (Malta)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
mwi (Malawi)	9	1 (11.1%)	0 (0.0%)	8 (88.9%)	0 (0.0%)	3	1 (33.3%)
nam (Namibia)	8	1 (12.5%)	1 (12.5%)	6 (75.0%)	0 (0.0%)	2	1 (50.0%)
nor (Norway)	45	1 (2.2%)	7 (15.6%)	37 (82.2%)	0 (0.0%)	13	1 (7.7%)
nzl (New Zealand)	125	1 (0.8%)	30 (24.0%)	94 (75.2%)	0 (0.0%)	23	1 (4.3%)
som (Somalia)	9	1 (11.1%)	1 (11.1%)	7 (77.8%)	0 (0.0%)	3	1 (33.3%)
tcd (Chad)	6	1 (16.7%)	1 (16.7%)	3 (50.0%)	1 (16.7%)	2	1 (50.0%)
alb (Albania)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
and (Andorra, Principality of)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	3	0 (0.0%)
aze (Azerbaijan)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
bhr (Bahrain)	5	0 (0.0%)	1 (20.0%)	4 (80.0%)	0 (0.0%)	3	0 (0.0%)
blr (Belarus)	36	0 (0.0%)	0 (0.0%)	36 (100.0%)	0 (0.0%)	4	0 (0.0%)
bmu (Bermuda)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
civ (Ivory Coast (Cote D'Ivoire))	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
cmr (Cameroon)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	2	0 (0.0%)
cod (Congo, The Democratic Republic of the)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
dji (Djibouti)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
dza (Algeria)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	1	0 (0.0%)
est (Estonia)	34	0 (0.0%)	6 (17.6%)	28 (82.4%)	0 (0.0%)	10	0 (0.0%)
eth (Ethiopia)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	1	0 (0.0%)
fin (Finland)	50	0 (0.0%)	9 (18.0%)	41 (82.0%)	0 (0.0%)	7	0 (0.0%)
gib (Gibraltar)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
gin (Guinea)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
gmb (Gambia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
grc (Greece)	91	0 (0.0%)	10 (11.0%)	81 (89.0%)	0 (0.0%)	10	0 (0.0%)
gum (Guam [US])	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
guy (Guyana)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
imn (Isle of Man)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
irq (Iraq)	20	0 (0.0%)	1 (5.0%)	19 (95.0%)	0 (0.0%)	7	0 (0.0%)
jey (Jersey)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
kwt (Kuwait)	26	0 (0.0%)	0 (0.0%)	26 (100.0%)	0 (0.0%)	2	0 (0.0%)
lby (Libya)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lca (Saint Lucia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lie (Liechtenstein)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	3	0 (0.0%)
lka (Sri Lanka)	67	0 (0.0%)	8 (11.9%)	59 (88.1%)	0 (0.0%)	3	0 (0.0%)
lva (Latvia)	11	0 (0.0%)	1 (9.1%)	10 (90.9%)	0 (0.0%)	10	0 (0.0%)
mar (Morocco)	103	0 (0.0%)	0 (0.0%)	103 (100.0%)	0 (0.0%)	3	0 (0.0%)
mco (Monaco)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mdg (Madagascar)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	2	0 (0.0%)
mhl (Marshall Islands)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
mkd (Macedonia)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	3	0 (0.0%)
mli (Mali)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	3	0 (0.0%)
mmr (Myanmar)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	4	0 (0.0%)
mne (Montenegro)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
mng (Mongolia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
ncl (New Caledonia [French])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
nga (Nigeria)	15	0 (0.0%)	4 (26.7%)	11 (73.3%)	0 (0.0%)	6	0 (0.0%)
omn (Oman)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
pan (Panama)	33	0 (0.0%)	2 (6.1%)	31 (93.9%)	0 (0.0%)	8	0 (0.0%)
per (Peru)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	4	0 (0.0%)
pri (Puerto Rico)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
qat (Qatar)	13	0 (0.0%)	1 (7.7%)	12 (92.3%)	0 (0.0%)	3	0 (0.0%)
reu (Reunion [French])	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	2	0 (0.0%)
rwa (Rwanda)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
sau (Saudi Arabia)	294	0 (0.0%)	34 (11.6%)	260 (88.4%)	0 (0.0%)	6	0 (0.0%)
sen (Senegal)	23	0 (0.0%)	0 (0.0%)	23 (100.0%)	0 (0.0%)	1	0 (0.0%)
slv (El Salvador)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
svn (Slovenia)	13	0 (0.0%)	1 (7.7%)	12 (92.3%)	0 (0.0%)	6	0 (0.0%)
syr (Syria)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	1	0 (0.0%)
tto (Trinidad and Tobago)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
ven (Venezuela)	155	0 (0.0%)	115 (74.2%)	40 (25.8%)	0 (0.0%)	3	0 (0.0%)
vgb (British Virgin Islands)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	3	0 (0.0%)
vir (Virgin Islands [US])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
zmb (Zambia)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)