IPv4 R&E Routing Table Report 23:00 GMT Sat 17 Jan, 2026 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1023816 Prefixes after maximum aggregation (per Origin AS): 394606 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506790 Number of IPv4 prefixes with a valid ROA: 608323 Number of IPv4 prefixes with an invalid ROA: 574 Number of IPv4 prefixes with no ROA: 414919 Total ASes present in the Internet Routing Table: 77686 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66593 Origin ASes announcing only one prefix: 27159 Transit ASes present in the Internet Routing Table: 11093 Transit-only ASes present in the Internet Routing Table: 565 Paths with bogon ASNs present in the IPv4 Routing Table: 41 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1016 Number of instances of unregistered ASNs: 1046 Number of 32-bit ASNs allocated by the RIRs: 48411 Number of 32-bit ASNs visible in the Routing Table: 39613 Prefixes from 32-bit ASNs in the Routing Table: 220613 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 476 Number of addresses announced to Internet: 3105385984 Equivalent to 185 /8s, 24 /16s and 110 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 333880 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279607 Total APNIC prefixes after maximum aggregation: 81622 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 266247 Unique aggregates announced from the APNIC address blocks: 106819 APNIC Region origin ASes present in the Internet Routing Table: 14967 APNIC Prefixes per ASN: 17.79 APNIC Region origin ASes announcing only one prefix: 4548 APNIC Region transit ASes present in the Internet Routing Table: 2011 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10549 Number of APNIC addresses announced to Internet: 753636864 Equivalent to 44 /8s, 235 /16s and 150 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 299072 Total ARIN prefixes after maximum aggregation: 134715 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299381 Unique aggregates announced from the ARIN address blocks: 146042 ARIN Region origin ASes present in the Internet Routing Table: 19364 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7068 ARIN Region transit ASes present in the Internet Routing Table: 1918 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5439 Number of ARIN addresses announced to Internet: 1344325120 Equivalent to 80 /8s, 32 /16s and 198 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 282057 Total RIPE prefixes after maximum aggregation: 139920 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283699 Unique aggregates announced from the RIPE address blocks: 184558 RIPE Region origin ASes present in the Internet Routing Table: 29112 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12111 RIPE Region transit ASes present in the Internet Routing Table: 4042 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12909 Number of RIPE addresses announced to Internet: 733433600 Equivalent to 43 /8s, 183 /16s and 79 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 125666 Total LACNIC prefixes after maximum aggregation: 30728 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 121496 Unique aggregates announced from the LACNIC address blocks: 49686 LACNIC Region origin ASes present in the Internet Routing Table: 11342 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9342 Number of LACNIC addresses announced to Internet: 170536960 Equivalent to 10 /8s, 42 /16s and 48 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 36398 Total AfriNIC prefixes after maximum aggregation: 6933 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 52517 Unique aggregates announced from the AfriNIC address blocks: 19284 AfriNIC Region origin ASes present in the Internet Routing Table: 2008 AfriNIC Prefixes per ASN: 26.15 AfriNIC Region origin ASes announcing only one prefix: 747 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1374 Number of AfriNIC addresses announced to Internet: 103167744 Equivalent to 6 /8s, 38 /16s and 55 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4421 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3419 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2962 865 500 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2843 178 560 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14030 38737 5437 AMAZON-02, US 11492 4635 308 1031 CABLEONE, US 22773 4496 3082 299 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3698 1321 70 SHAW, CA 396982 3327 4868 498 GOOGLE-CLOUD-PLATFORM, US 174 3181 8768 839 COGENT-174, US 749 3145 54729 2396 DNIC-AS-00749, US 16625 2820 1209 2120 AKAMAI-AS, US 36352 2706 222 890 AS-COLOCROSSING, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7241 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3905 365 2232 M247, RO 20940 3830 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2575 183 1872 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1623 243 798 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12679 3300 603 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2486 508 350 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1254 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 904 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1982 638 33 RAYA-AS, EG 36992 1842 1534 340 ETISALAT-MISR, EG 24863 1273 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1146 524 47 Vodafone-, EG 37069 1101 1096 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 571 82 3 KENET-AS, KE 328608 561 48 172 Africa-on-Cloud-AS, ZA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14030 38737 5437 AMAZON-02, US 9808 13502 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12679 3300 603 UNINET, MX 12479 7241 1711 149 UNI2-AS, ES 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4683 543 338 BBIL-AP BHARTI Airtel Ltd., IN 11492 4635 308 1031 CABLEONE, US 22773 4496 3082 299 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4421 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13502 13382 CHINAMOBILE-CN China Mobile Communications Grou 8151 12679 12076 UNINET, MX 12479 7241 7092 UNI2-AS, ES 7545 6027 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4421 4397 FPT-AS-AP FPT Telecom Company, VN 9498 4683 4345 BBIL-AP BHARTI Airtel Ltd., IN 22773 4496 4197 ASN-CXA-ALL-CCI-22773-RDC, US 7552 4052 4023 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4, US 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:40 /11:93 /12:302 /13:578 /14:1198 /15:2087 /16:13655 /17:8168 /18:13440 /19:24716 /20:44643 /21:51946 /22:113130 /23:105878 /24:643912 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6860 12679 UNINET, MX 12479 6172 7241 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3698 SHAW, CA 22773 3049 4496 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2489 14030 AMAZON-02, US 30036 2318 2660 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2491 2:1510 3:978 4:9 5:4999 6:185 7:6 8:1489 9:14 11:172 12:1226 13:621 14:2639 15:414 16:179 17:390 18:917 20:596 21:4 22:188 23:8120 24:2622 25:2 27:2814 29:19 31:3410 32:31 34:84 35:290 36:4632 37:4513 38:9894 39:1245 40:439 41:4487 42:1971 43:2990 44:413 45:19600 46:4921 47:402 49:2195 50:2063 51:598 52:1254 54:235 55:1082 56:11 57:307 58:2339 59:1353 60:1171 61:3125 62:3117 63:1764 64:6162 65:2138 66:5989 67:3257 68:1492 69:4204 70:1030 71:617 72:3063 74:2943 75:1513 76:606 77:2753 78:1916 79:1796 80:2289 81:2083 82:4011 83:1475 84:2018 85:3668 86:1093 87:2204 88:1351 89:4621 90:827 91:8392 92:2851 93:3009 94:4268 95:4520 96:1444 97:312 98:956 99:782 100:69 101:1583 102:4364 103:32917 104:5439 105:769 106:908 107:2823 108:1221 109:4230 110:2310 111:4052 112:3078 113:1972 114:2165 115:2266 116:2178 117:3284 118:2976 119:2116 120:2581 121:1508 122:2956 123:2296 124:1653 125:2974 126:125 128:1578 129:949 130:1543 131:2250 132:767 133:461 134:1620 135:534 136:1632 137:1225 138:2986 139:1609 140:1759 141:1563 142:2468 143:2126 144:1550 145:631 146:2189 147:2273 148:2815 149:2915 150:1326 151:2598 152:2262 153:846 154:9464 155:2268 156:4304 157:2246 158:1490 159:2739 160:3650 161:1998 162:4006 163:2327 164:1969 165:2647 166:1303 167:2190 168:3914 169:844 170:5440 171:1118 172:4546 173:3432 174:893 175:1356 176:3772 177:4712 178:4252 179:2288 180:3114 181:4360 182:3887 183:2746 184:2023 185:21648 186:5525 187:4825 188:4618 189:4490 190:9653 191:1516 192:11418 193:9488 194:7831 195:5677 196:3251 197:3280 198:6073 199:6111 200:8041 201:6375 202:10598 203:10586 204:4670 205:3682 206:4365 207:3810 208:4365 209:5435 210:4731 211:2685 212:4953 213:4036 214:1055 215:54 216:7134 217:3453 218:1619 219:421 220:2192 221:1310 222:876 223:3283 End of report