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)	2389	304 (12.7%)	487 (20.4%)	1579 (66.1%)	19 (0.8%)	534	186 (34.8%)
usa (United States)	1554	76 (4.9%)	496 (31.9%)	980 (63.1%)	2 (0.1%)	328	58 (17.7%)
ind (India)	433	63 (14.5%)	38 (8.8%)	330 (76.2%)	2 (0.5%)	48	14 (29.2%)
rus (Russian Federation)	712	46 (6.5%)	54 (7.6%)	612 (86.0%)	0 (0.0%)	140	20 (14.3%)
egy (Egypt)	141	35 (24.8%)	0 (0.0%)	106 (75.2%)	0 (0.0%)	5	1 (20.0%)
nld (Netherlands)	330	30 (9.1%)	96 (29.1%)	202 (61.2%)	2 (0.6%)	91	20 (22.0%)
pol (Poland)	507	27 (5.3%)	53 (10.5%)	427 (84.2%)	0 (0.0%)	138	20 (14.5%)
tur (Turkey)	597	24 (4.0%)	72 (12.1%)	501 (83.9%)	0 (0.0%)	67	15 (22.4%)
tun (Tunisia)	49	22 (44.9%)	0 (0.0%)	27 (55.1%)	0 (0.0%)	4	2 (50.0%)
chn (China)	277	19 (6.9%)	52 (18.8%)	206 (74.4%)	0 (0.0%)	38	6 (15.8%)
jpn (Japan)	244	19 (7.8%)	39 (16.0%)	186 (76.2%)	0 (0.0%)	49	11 (22.4%)
rou (Romania)	113	19 (16.8%)	34 (30.1%)	60 (53.1%)	0 (0.0%)	21	7 (33.3%)
npl (Nepal)	57	18 (31.6%)	10 (17.5%)	29 (50.9%)	0 (0.0%)	16	9 (56.3%)
phl (Philippines)	170	18 (10.6%)	29 (17.1%)	123 (72.4%)	0 (0.0%)	32	14 (43.8%)
deu (Germany)	596	16 (2.7%)	179 (30.0%)	401 (67.3%)	0 (0.0%)	97	10 (10.3%)
irn (Iran)	469	16 (3.4%)	74 (15.8%)	379 (80.8%)	0 (0.0%)	66	14 (21.2%)
vnm (Vietnam)	92	16 (17.4%)	16 (17.4%)	60 (65.2%)	0 (0.0%)	19	7 (36.8%)
mwi (Malawi)	61	15 (24.6%)	3 (4.9%)	43 (70.5%)	0 (0.0%)	10	2 (20.0%)
gbr (United Kingdom)	244	13 (5.3%)	68 (27.9%)	162 (66.4%)	1 (0.4%)	83	10 (12.0%)
isr (Israel)	72	13 (18.1%)	6 (8.3%)	53 (73.6%)	0 (0.0%)	10	3 (30.0%)
grc (Greece)	82	12 (14.6%)	8 (9.8%)	62 (75.6%)	0 (0.0%)	5	1 (20.0%)
ken (Kenya)	83	12 (14.5%)	8 (9.6%)	63 (75.9%)	0 (0.0%)	24	8 (33.3%)
ukr (Ukraine)	147	12 (8.2%)	24 (16.3%)	111 (75.5%)	0 (0.0%)	39	9 (23.1%)
zaf (South Africa)	140	12 (8.6%)	9 (6.4%)	119 (85.0%)	0 (0.0%)	27	7 (25.9%)
idn (Indonesia)	44	10 (22.7%)	8 (18.2%)	26 (59.1%)	0 (0.0%)	23	7 (30.4%)
aus (Australia)	138	9 (6.5%)	35 (25.4%)	93 (67.4%)	1 (0.7%)	43	7 (16.3%)
can (Canada)	171	9 (5.3%)	46 (26.9%)	116 (67.8%)	0 (0.0%)	39	6 (15.4%)
ecu (Ecuador)	84	9 (10.7%)	10 (11.9%)	64 (76.2%)	1 (1.2%)	21	9 (42.9%)
esp (Spain)	108	9 (8.3%)	16 (14.8%)	83 (76.9%)	0 (0.0%)	29	7 (24.1%)
hkg (Hong Kong)	79	9 (11.4%)	29 (36.7%)	41 (51.9%)	0 (0.0%)	30	8 (26.7%)
mus (Mauritius)	29	9 (31.0%)	2 (6.9%)	18 (62.1%)	0 (0.0%)	19	8 (42.1%)
dnk (Denmark)	25	8 (32.0%)	4 (16.0%)	13 (52.0%)	0 (0.0%)	10	4 (40.0%)
arg (Argentina)	65	7 (10.8%)	7 (10.8%)	51 (78.5%)	0 (0.0%)	23	4 (17.4%)
pry (Paraguay)	38	7 (18.4%)	5 (13.2%)	25 (65.8%)	1 (2.6%)	10	5 (50.0%)
tha (Thailand)	211	7 (3.3%)	7 (3.3%)	196 (92.9%)	1 (0.5%)	20	7 (35.0%)
ven (Venezuela)	125	7 (5.6%)	19 (15.2%)	98 (78.4%)	1 (0.8%)	13	6 (46.2%)
bol (Bolivia)	73	6 (8.2%)	10 (13.7%)	57 (78.1%)	0 (0.0%)	4	2 (50.0%)
bel (Belgium)	47	5 (10.6%)	11 (23.4%)	31 (66.0%)	0 (0.0%)	21	3 (14.3%)
jor (Jordan)	5	5 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
mda (Moldova, Republic of)	15	5 (33.3%)	7 (46.7%)	3 (20.0%)	0 (0.0%)	6	2 (33.3%)
twn (Taiwan)	82	5 (6.1%)	13 (15.9%)	64 (78.0%)	0 (0.0%)	12	3 (25.0%)
tza (Tanzania)	9	5 (55.6%)	0 (0.0%)	4 (44.4%)	0 (0.0%)	6	3 (50.0%)
btn (Bhutan)	27	4 (14.8%)	6 (22.2%)	17 (63.0%)	0 (0.0%)	8	2 (25.0%)
col (Colombia)	55	4 (7.3%)	2 (3.6%)	49 (89.1%)	0 (0.0%)	15	1 (6.7%)
cze (Czech Republic)	31	4 (12.9%)	5 (16.1%)	22 (71.0%)	0 (0.0%)	17	3 (17.6%)
ita (Italy)	123	4 (3.3%)	22 (17.9%)	97 (78.9%)	0 (0.0%)	28	3 (10.7%)
mex (Mexico)	178	4 (2.2%)	19 (10.7%)	154 (86.5%)	1 (0.6%)	27	3 (11.1%)
sau (Saudi Arabia)	207	4 (1.9%)	15 (7.2%)	188 (90.8%)	0 (0.0%)	11	4 (36.4%)
ury (Uruguay)	66	4 (6.1%)	12 (18.2%)	50 (75.8%)	0 (0.0%)	8	3 (37.5%)
uzb (Uzbekistan)	14	4 (28.6%)	0 (0.0%)	10 (71.4%)	0 (0.0%)	6	1 (16.7%)
are (United Arab Emirates)	81	3 (3.7%)	8 (9.9%)	69 (85.2%)	1 (1.2%)	7	4 (57.1%)
kaz (Kazakhstan)	107	3 (2.8%)	5 (4.7%)	99 (92.5%)	0 (0.0%)	12	2 (16.7%)
mmr (Myanmar)	17	3 (17.6%)	0 (0.0%)	14 (82.4%)	0 (0.0%)	13	3 (23.1%)
ago (Angola)	91	2 (2.2%)	2 (2.2%)	87 (95.6%)	0 (0.0%)	11	2 (18.2%)
alb (Albania)	4	2 (50.0%)	0 (0.0%)	2 (50.0%)	0 (0.0%)	4	2 (50.0%)
bgd (Bangladesh)	35	2 (5.7%)	0 (0.0%)	33 (94.3%)	0 (0.0%)	21	2 (9.5%)
che (Switzerland)	71	2 (2.8%)	13 (18.3%)	55 (77.5%)	1 (1.4%)	20	2 (10.0%)
cri (Costa Rica)	15	2 (13.3%)	1 (6.7%)	12 (80.0%)	0 (0.0%)	9	1 (11.1%)
imn (Isle of Man)	2	2 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2	2 (100.0%)
ltu (Lithuania)	17	2 (11.8%)	5 (29.4%)	10 (58.8%)	0 (0.0%)	8	1 (12.5%)
nzl (New Zealand)	15	2 (13.3%)	4 (26.7%)	9 (60.0%)	0 (0.0%)	8	2 (25.0%)
pan (Panama)	37	2 (5.4%)	6 (16.2%)	28 (75.7%)	1 (2.7%)	8	3 (37.5%)
pri (Puerto Rico)	12	2 (16.7%)	2 (16.7%)	8 (66.7%)	0 (0.0%)	2	1 (50.0%)
pse (Palestinian Territory, Occupied)	61	2 (3.3%)	0 (0.0%)	59 (96.7%)	0 (0.0%)	2	2 (100.0%)
rwa (Rwanda)	13	2 (15.4%)	2 (15.4%)	9 (69.2%)	0 (0.0%)	5	2 (40.0%)
sgp (Singapore)	34	2 (5.9%)	12 (35.3%)	20 (58.8%)	0 (0.0%)	20	1 (5.0%)
srb (Serbia)	147	2 (1.4%)	1 (0.7%)	144 (98.0%)	0 (0.0%)	9	2 (22.2%)
swe (Sweden)	65	2 (3.1%)	13 (20.0%)	50 (76.9%)	0 (0.0%)	19	2 (10.5%)
uga (Uganda)	41	2 (4.9%)	4 (9.8%)	35 (85.4%)	0 (0.0%)	10	2 (20.0%)
abw (Aruba)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
afg (Afghanistan, Islamic State of)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
aut (Austria)	68	1 (1.5%)	18 (26.5%)	48 (70.6%)	1 (1.5%)	17	2 (11.8%)
bhr (Bahrain)	13	1 (7.7%)	1 (7.7%)	11 (84.6%)	0 (0.0%)	4	1 (25.0%)
blr (Belarus)	50	1 (2.0%)	1 (2.0%)	48 (96.0%)	0 (0.0%)	6	1 (16.7%)
bwa (Botswana)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
chl (Chile)	94	1 (1.1%)	14 (14.9%)	79 (84.0%)	0 (0.0%)	16	1 (6.3%)
civ (Ivory Coast (Cote D'Ivoire))	8	1 (12.5%)	1 (12.5%)	6 (75.0%)	0 (0.0%)	2	1 (50.0%)
cok (Cook Islands)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
cpv (Cape Verde)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	1	1 (100.0%)
dji (Djibouti)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
fra (France)	139	1 (0.7%)	51 (36.7%)	87 (62.6%)	0 (0.0%)	26	1 (3.8%)
kor (South Korea)	81	1 (1.2%)	42 (51.9%)	38 (46.9%)	0 (0.0%)	11	1 (9.1%)
lbn (Lebanon)	12	1 (8.3%)	2 (16.7%)	9 (75.0%)	0 (0.0%)	6	1 (16.7%)
lbr (Liberia)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
lva (Latvia)	8	1 (12.5%)	6 (75.0%)	1 (12.5%)	0 (0.0%)	4	1 (25.0%)
mys (Malaysia)	33	1 (3.0%)	8 (24.2%)	24 (72.7%)	0 (0.0%)	7	1 (14.3%)
smr (San Marino)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
zmb (Zambia)	4	1 (25.0%)	0 (0.0%)	3 (75.0%)	0 (0.0%)	3	1 (33.3%)
and (Andorra, Principality of)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
arm (Armenia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
aze (Azerbaijan)	33	0 (0.0%)	0 (0.0%)	33 (100.0%)	0 (0.0%)	4	0 (0.0%)
bgr (Bulgaria)	31	0 (0.0%)	12 (38.7%)	19 (61.3%)	0 (0.0%)	18	0 (0.0%)
bih (Bosnia and Herzegovina)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	1	0 (0.0%)
cmr (Cameroon)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
cod (Congo, The Democratic Republic of the)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	2	0 (0.0%)
dom (Dominican Republic)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
dza (Algeria)	16	0 (0.0%)	0 (0.0%)	16 (100.0%)	0 (0.0%)	1	0 (0.0%)
est (Estonia)	6	0 (0.0%)	4 (66.7%)	2 (33.3%)	0 (0.0%)	4	0 (0.0%)
eth (Ethiopia)	22	0 (0.0%)	0 (0.0%)	22 (100.0%)	0 (0.0%)	2	0 (0.0%)
fin (Finland)	40	0 (0.0%)	11 (27.5%)	29 (72.5%)	0 (0.0%)	9	0 (0.0%)
gab (Gabon)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
geo (Georgia)	19	0 (0.0%)	0 (0.0%)	19 (100.0%)	0 (0.0%)	4	0 (0.0%)
gha (Ghana)	77	0 (0.0%)	1 (1.3%)	76 (98.7%)	0 (0.0%)	3	0 (0.0%)
gtm (Guatemala)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
gum (Guam [US])	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	4	0 (0.0%)
hrv (Croatia)	3	0 (0.0%)	2 (66.7%)	1 (33.3%)	0 (0.0%)	2	0 (0.0%)
hun (Hungary)	17	0 (0.0%)	5 (29.4%)	12 (70.6%)	0 (0.0%)	5	0 (0.0%)
irl (Ireland)	47	0 (0.0%)	13 (27.7%)	34 (72.3%)	0 (0.0%)	18	0 (0.0%)
irq (Iraq)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	4	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	4	0 (0.0%)
kwt (Kuwait)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lby (Libya)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
lie (Liechtenstein)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
lka (Sri Lanka)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	2	0 (0.0%)
lux (Luxembourg)	6	0 (0.0%)	5 (83.3%)	1 (16.7%)	0 (0.0%)	3	0 (0.0%)
mar (Morocco)	23	0 (0.0%)	0 (0.0%)	23 (100.0%)	0 (0.0%)	2	0 (0.0%)
mdv (Maldives)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	2	0 (0.0%)
mng (Mongolia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
nam (Namibia)	6	0 (0.0%)	1 (16.7%)	4 (66.7%)	1 (16.7%)	1	1 (100.0%)
nga (Nigeria)	10	0 (0.0%)	4 (40.0%)	6 (60.0%)	0 (0.0%)	6	0 (0.0%)
nor (Norway)	21	0 (0.0%)	5 (23.8%)	16 (76.2%)	0 (0.0%)	11	0 (0.0%)
omn (Oman)	12	0 (0.0%)	1 (8.3%)	11 (91.7%)	0 (0.0%)	3	0 (0.0%)
pak (Pakistan)	29	0 (0.0%)	10 (34.5%)	18 (62.1%)	1 (3.4%)	11	1 (9.1%)
per (Peru)	31	0 (0.0%)	10 (32.3%)	19 (61.3%)	2 (6.5%)	8	2 (25.0%)
prt (Portugal)	72	0 (0.0%)	17 (23.6%)	55 (76.4%)	0 (0.0%)	9	0 (0.0%)
pyf (Polynesia [French])	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	3	0 (0.0%)
qat (Qatar)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
reu (Reunion [French])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
sdn (Sudan)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	2	0 (0.0%)
slv (El Salvador)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
som (Somalia)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	3	0 (0.0%)
svk (Slovak Republic)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
svn (Slovenia)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	4	0 (0.0%)
syc (Seychelles)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
tcd (Chad)	7	0 (0.0%)	6 (85.7%)	1 (14.3%)	0 (0.0%)	2	0 (0.0%)
tjk (Tajikistan)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	1	0 (0.0%)
vgb (British Virgin Islands)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)