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)	2679	402 (15.0%)	562 (21.0%)	1691 (63.1%)	24 (0.9%)	618	233 (37.7%)
egy (Egypt)	410	122 (29.8%)	0 (0.0%)	288 (70.2%)	0 (0.0%)	5	1 (20.0%)
usa (United States)	1637	102 (6.2%)	473 (28.9%)	1056 (64.5%)	6 (0.4%)	307	64 (20.8%)
tun (Tunisia)	95	67 (70.5%)	0 (0.0%)	28 (29.5%)	0 (0.0%)	5	4 (80.0%)
chl (Chile)	199	33 (16.6%)	10 (5.0%)	156 (78.4%)	0 (0.0%)	19	3 (15.8%)
nld (Netherlands)	453	32 (7.1%)	103 (22.7%)	318 (70.2%)	0 (0.0%)	67	17 (25.4%)
rus (Russian Federation)	422	32 (7.6%)	31 (7.3%)	359 (85.1%)	0 (0.0%)	106	16 (15.1%)
ind (India)	420	31 (7.4%)	38 (9.0%)	348 (82.9%)	3 (0.7%)	32	7 (21.9%)
tur (Turkey)	554	22 (4.0%)	36 (6.5%)	495 (89.4%)	1 (0.2%)	58	13 (22.4%)
grc (Greece)	124	21 (16.9%)	7 (5.6%)	96 (77.4%)	0 (0.0%)	6	1 (16.7%)
zaf (South Africa)	151	20 (13.2%)	7 (4.6%)	124 (82.1%)	0 (0.0%)	41	15 (36.6%)
chn (China)	395	18 (4.6%)	121 (30.6%)	256 (64.8%)	0 (0.0%)	29	5 (17.2%)
jpn (Japan)	225	18 (8.0%)	46 (20.4%)	161 (71.6%)	0 (0.0%)	39	13 (33.3%)
rou (Romania)	98	18 (18.4%)	24 (24.5%)	56 (57.1%)	0 (0.0%)	11	1 (9.1%)
vnm (Vietnam)	59	18 (30.5%)	11 (18.6%)	29 (49.2%)	1 (1.7%)	9	4 (44.4%)
idn (Indonesia)	30	17 (56.7%)	5 (16.7%)	8 (26.7%)	0 (0.0%)	19	10 (52.6%)
ita (Italy)	164	16 (9.8%)	18 (11.0%)	128 (78.0%)	2 (1.2%)	32	9 (28.1%)
gbr (United Kingdom)	342	15 (4.4%)	66 (19.3%)	258 (75.4%)	3 (0.9%)	80	14 (17.5%)
ken (Kenya)	73	15 (20.5%)	6 (8.2%)	52 (71.2%)	0 (0.0%)	22	8 (36.4%)
mwi (Malawi)	50	15 (30.0%)	0 (0.0%)	33 (66.0%)	2 (4.0%)	6	2 (33.3%)
ven (Venezuela)	110	15 (13.6%)	12 (10.9%)	80 (72.7%)	3 (2.7%)	14	2 (14.3%)
can (Canada)	189	14 (7.4%)	35 (18.5%)	140 (74.1%)	0 (0.0%)	42	8 (19.0%)
ecu (Ecuador)	58	13 (22.4%)	10 (17.2%)	35 (60.3%)	0 (0.0%)	16	8 (50.0%)
hkg (Hong Kong)	55	13 (23.6%)	15 (27.3%)	26 (47.3%)	1 (1.8%)	23	10 (43.5%)
phl (Philippines)	102	13 (12.7%)	12 (11.8%)	77 (75.5%)	0 (0.0%)	22	8 (36.4%)
ukr (Ukraine)	81	13 (16.0%)	26 (32.1%)	42 (51.9%)	0 (0.0%)	37	10 (27.0%)
twn (Taiwan)	109	12 (11.0%)	8 (7.3%)	89 (81.7%)	0 (0.0%)	13	3 (23.1%)
aus (Australia)	139	11 (7.9%)	30 (21.6%)	97 (69.8%)	1 (0.7%)	37	9 (24.3%)
dnk (Denmark)	36	11 (30.6%)	8 (22.2%)	17 (47.2%)	0 (0.0%)	11	4 (36.4%)
mex (Mexico)	262	11 (4.2%)	25 (9.5%)	225 (85.9%)	1 (0.4%)	33	6 (18.2%)
npl (Nepal)	64	10 (15.6%)	9 (14.1%)	43 (67.2%)	2 (3.1%)	10	7 (70.0%)
deu (Germany)	395	9 (2.3%)	85 (21.5%)	300 (75.9%)	1 (0.3%)	53	9 (17.0%)
tha (Thailand)	226	9 (4.0%)	3 (1.3%)	213 (94.2%)	1 (0.4%)	15	6 (40.0%)
jor (Jordan)	14	7 (50.0%)	0 (0.0%)	7 (50.0%)	0 (0.0%)	2	1 (50.0%)
mus (Mauritius)	29	7 (24.1%)	1 (3.4%)	21 (72.4%)	0 (0.0%)	14	6 (42.9%)
col (Colombia)	70	6 (8.6%)	4 (5.7%)	60 (85.7%)	0 (0.0%)	13	4 (30.8%)
esp (Spain)	95	6 (6.3%)	13 (13.7%)	75 (78.9%)	1 (1.1%)	23	6 (26.1%)
pol (Poland)	172	6 (3.5%)	14 (8.1%)	152 (88.4%)	0 (0.0%)	27	1 (3.7%)
ury (Uruguay)	100	6 (6.0%)	11 (11.0%)	82 (82.0%)	1 (1.0%)	7	4 (57.1%)
pry (Paraguay)	33	5 (15.2%)	7 (21.2%)	21 (63.6%)	0 (0.0%)	8	3 (37.5%)
are (United Arab Emirates)	38	4 (10.5%)	4 (10.5%)	29 (76.3%)	1 (2.6%)	6	3 (50.0%)
bol (Bolivia)	65	4 (6.2%)	7 (10.8%)	54 (83.1%)	0 (0.0%)	4	2 (50.0%)
irn (Iran)	299	4 (1.3%)	22 (7.4%)	273 (91.3%)	0 (0.0%)	30	4 (13.3%)
arg (Argentina)	66	3 (4.5%)	12 (18.2%)	51 (77.3%)	0 (0.0%)	18	2 (11.1%)
isr (Israel)	33	3 (9.1%)	4 (12.1%)	26 (78.8%)	0 (0.0%)	8	3 (37.5%)
mdv (Maldives)	8	3 (37.5%)	1 (12.5%)	4 (50.0%)	0 (0.0%)	3	1 (33.3%)
srb (Serbia)	110	3 (2.7%)	1 (0.9%)	106 (96.4%)	0 (0.0%)	11	3 (27.3%)
swe (Sweden)	48	3 (6.3%)	13 (27.1%)	32 (66.7%)	0 (0.0%)	20	3 (15.0%)
arm (Armenia)	21	2 (9.5%)	0 (0.0%)	19 (90.5%)	0 (0.0%)	7	2 (28.6%)
bel (Belgium)	37	2 (5.4%)	7 (18.9%)	28 (75.7%)	0 (0.0%)	14	2 (14.3%)
bhr (Bahrain)	26	2 (7.7%)	3 (11.5%)	21 (80.8%)	0 (0.0%)	4	2 (50.0%)
blr (Belarus)	37	2 (5.4%)	0 (0.0%)	35 (94.6%)	0 (0.0%)	6	1 (16.7%)
btn (Bhutan)	6	2 (33.3%)	2 (33.3%)	2 (33.3%)	0 (0.0%)	1	1 (100.0%)
cze (Czech Republic)	18	2 (11.1%)	5 (27.8%)	11 (61.1%)	0 (0.0%)	12	1 (8.3%)
dza (Algeria)	48	2 (4.2%)	0 (0.0%)	46 (95.8%)	0 (0.0%)	2	1 (50.0%)
mda (Moldova, Republic of)	5	2 (40.0%)	1 (20.0%)	2 (40.0%)	0 (0.0%)	3	1 (33.3%)
pan (Panama)	55	2 (3.6%)	8 (14.5%)	45 (81.8%)	0 (0.0%)	7	1 (14.3%)
sau (Saudi Arabia)	174	2 (1.1%)	21 (12.1%)	151 (86.8%)	0 (0.0%)	7	2 (28.6%)
sgp (Singapore)	36	2 (5.6%)	12 (33.3%)	22 (61.1%)	0 (0.0%)	9	1 (11.1%)
abw (Aruba)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
ago (Angola)	74	1 (1.4%)	1 (1.4%)	72 (97.3%)	0 (0.0%)	7	1 (14.3%)
bgd (Bangladesh)	26	1 (3.8%)	1 (3.8%)	24 (92.3%)	0 (0.0%)	16	1 (6.3%)
blz (Belize)	7	1 (14.3%)	1 (14.3%)	5 (71.4%)	0 (0.0%)	1	1 (100.0%)
bwa (Botswana)	5	1 (20.0%)	0 (0.0%)	4 (80.0%)	0 (0.0%)	3	1 (33.3%)
cok (Cook Islands)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
cri (Costa Rica)	9	1 (11.1%)	1 (11.1%)	7 (77.8%)	0 (0.0%)	6	1 (16.7%)
est (Estonia)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
fra (France)	105	1 (1.0%)	30 (28.6%)	74 (70.5%)	0 (0.0%)	18	1 (5.6%)
gin (Guinea)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
hun (Hungary)	15	1 (6.7%)	6 (40.0%)	8 (53.3%)	0 (0.0%)	6	1 (16.7%)
imn (Isle of Man)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
irq (Iraq)	11	1 (9.1%)	0 (0.0%)	10 (90.9%)	0 (0.0%)	5	1 (20.0%)
isl (Iceland)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	3	1 (33.3%)
lbn (Lebanon)	14	1 (7.1%)	2 (14.3%)	11 (78.6%)	0 (0.0%)	5	1 (20.0%)
mng (Mongolia)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
mys (Malaysia)	9	1 (11.1%)	4 (44.4%)	4 (44.4%)	0 (0.0%)	5	1 (20.0%)
nzl (New Zealand)	24	1 (4.2%)	5 (20.8%)	17 (70.8%)	1 (4.2%)	9	2 (22.2%)
pak (Pakistan)	45	1 (2.2%)	4 (8.9%)	40 (88.9%)	0 (0.0%)	9	1 (11.1%)
pri (Puerto Rico)	9	1 (11.1%)	2 (22.2%)	6 (66.7%)	0 (0.0%)	3	1 (33.3%)
tgo (Togo)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
aut (Austria)	62	0 (0.0%)	10 (16.1%)	52 (83.9%)	0 (0.0%)	14	0 (0.0%)
aze (Azerbaijan)	23	0 (0.0%)	0 (0.0%)	23 (100.0%)	0 (0.0%)	2	0 (0.0%)
bfa (Burkina Faso)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
bgr (Bulgaria)	36	0 (0.0%)	9 (25.0%)	27 (75.0%)	0 (0.0%)	18	0 (0.0%)
bih (Bosnia and Herzegovina)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
che (Switzerland)	68	0 (0.0%)	13 (19.1%)	55 (80.9%)	0 (0.0%)	16	0 (0.0%)
cmr (Cameroon)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
cpv (Cape Verde)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
cub (Cuba)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
dom (Dominican Republic)	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	3	0 (0.0%)
eth (Ethiopia)	18	0 (0.0%)	0 (0.0%)	18 (100.0%)	0 (0.0%)	2	0 (0.0%)
fin (Finland)	9	0 (0.0%)	6 (66.7%)	3 (33.3%)	0 (0.0%)	5	0 (0.0%)
fji (Fiji)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
geo (Georgia)	15	0 (0.0%)	0 (0.0%)	15 (100.0%)	0 (0.0%)	3	0 (0.0%)
gha (Ghana)	28	0 (0.0%)	0 (0.0%)	28 (100.0%)	0 (0.0%)	4	0 (0.0%)
gtm (Guatemala)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
hrv (Croatia)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
irl (Ireland)	40	0 (0.0%)	12 (30.0%)	28 (70.0%)	0 (0.0%)	14	0 (0.0%)
kaz (Kazakhstan)	44	0 (0.0%)	4 (9.1%)	40 (90.9%)	0 (0.0%)	11	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	3	0 (0.0%)
khm (Cambodia, Kingdom of)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
kor (South Korea)	79	0 (0.0%)	48 (60.8%)	31 (39.2%)	0 (0.0%)	7	0 (0.0%)
kwt (Kuwait)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lao (Laos)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lbr (Liberia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	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%)
ltu (Lithuania)	28	0 (0.0%)	2 (7.1%)	26 (92.9%)	0 (0.0%)	5	0 (0.0%)
lux (Luxembourg)	9	0 (0.0%)	7 (77.8%)	2 (22.2%)	0 (0.0%)	4	0 (0.0%)
lva (Latvia)	8	0 (0.0%)	3 (37.5%)	5 (62.5%)	0 (0.0%)	6	0 (0.0%)
mar (Morocco)	59	0 (0.0%)	1 (1.7%)	58 (98.3%)	0 (0.0%)	5	0 (0.0%)
mkd (Macedonia)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
mmr (Myanmar)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	3	0 (0.0%)
moz (Mozambique)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
mrt (Mauritania)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
nam (Namibia)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	1	0 (0.0%)
nga (Nigeria)	38	0 (0.0%)	4 (10.5%)	34 (89.5%)	0 (0.0%)	5	0 (0.0%)
nic (Nicaragua)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
nor (Norway)	25	0 (0.0%)	3 (12.0%)	22 (88.0%)	0 (0.0%)	9	0 (0.0%)
omn (Oman)	18	0 (0.0%)	0 (0.0%)	18 (100.0%)	0 (0.0%)	3	0 (0.0%)
per (Peru)	9	0 (0.0%)	1 (11.1%)	7 (77.8%)	1 (11.1%)	5	1 (20.0%)
prt (Portugal)	97	0 (0.0%)	23 (23.7%)	74 (76.3%)	0 (0.0%)	9	0 (0.0%)
pse (Palestinian Territory, Occupied)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	1	0 (0.0%)
qat (Qatar)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
reu (Reunion [French])	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
rwa (Rwanda)	5	0 (0.0%)	3 (60.0%)	2 (40.0%)	0 (0.0%)	2	0 (0.0%)
sdn (Sudan)	4	0 (0.0%)	0 (0.0%)	4 (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)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
svk (Slovak Republic)	11	0 (0.0%)	2 (18.2%)	9 (81.8%)	0 (0.0%)	6	0 (0.0%)
svn (Slovenia)	13	0 (0.0%)	2 (15.4%)	11 (84.6%)	0 (0.0%)	4	0 (0.0%)
syr (Syria)	18	0 (0.0%)	0 (0.0%)	18 (100.0%)	0 (0.0%)	1	0 (0.0%)
tcd (Chad)	9	0 (0.0%)	6 (66.7%)	3 (33.3%)	0 (0.0%)	3	0 (0.0%)
tkm (Turkmenistan)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
uga (Uganda)	16	0 (0.0%)	3 (18.8%)	13 (81.3%)	0 (0.0%)	4	0 (0.0%)
uzb (Uzbekistan)	7	0 (0.0%)	2 (28.6%)	5 (71.4%)	0 (0.0%)	4	0 (0.0%)
vgb (British Virgin Islands)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)