IPv4 R&E Routing Table Report 23:05 GMT Thu 18 Dec, 2025 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: 1019500 Prefixes after maximum aggregation (per Origin AS): 393755 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505264 Number of IPv4 prefixes with a valid ROA: 605776 Number of IPv4 prefixes with an invalid ROA: 611 Number of IPv4 prefixes with no ROA: 413113 Total ASes present in the Internet Routing Table: 77605 Prefixes per ASN: 13.14 Origin-only ASes present in the Internet Routing Table: 66500 Origin ASes announcing only one prefix: 27134 Transit ASes present in the Internet Routing Table: 11105 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 18 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 980 Number of instances of unregistered ASNs: 1009 Number of 32-bit ASNs allocated by the RIRs: 48229 Number of 32-bit ASNs visible in the Routing Table: 39492 Prefixes from 32-bit ASNs in the Routing Table: 219397 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 718 Number of addresses announced to Internet: 3105246208 Equivalent to 185 /8s, 22 /16s and 76 /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: 333052 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276346 Total APNIC prefixes after maximum aggregation: 80810 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263073 Unique aggregates announced from the APNIC address blocks: 106324 APNIC Region origin ASes present in the Internet Routing Table: 14910 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4537 APNIC Region transit ASes present in the Internet Routing Table: 2007 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10494 Number of APNIC addresses announced to Internet: 753100032 Equivalent to 44 /8s, 227 /16s and 101 /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: 297957 Total ARIN prefixes after maximum aggregation: 134516 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298474 Unique aggregates announced from the ARIN address blocks: 145592 ARIN Region origin ASes present in the Internet Routing Table: 19363 ARIN Prefixes per ASN: 15.41 ARIN Region origin ASes announcing only one prefix: 7081 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5422 Number of ARIN addresses announced to Internet: 1342909696 Equivalent to 80 /8s, 11 /16s and 45 /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: 282398 Total RIPE prefixes after maximum aggregation: 139958 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283106 Unique aggregates announced from the RIPE address blocks: 183833 RIPE Region origin ASes present in the Internet Routing Table: 29137 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12107 RIPE Region transit ASes present in the Internet Routing Table: 4060 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 36 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12884 Number of RIPE addresses announced to Internet: 735112960 Equivalent to 43 /8s, 208 /16s and 239 /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: 125658 Total LACNIC prefixes after maximum aggregation: 30837 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121453 Unique aggregates announced from the LACNIC address blocks: 49721 LACNIC Region origin ASes present in the Internet Routing Table: 11321 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2673 LACNIC Region transit ASes present in the Internet Routing Table: 2548 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9326 Number of LACNIC addresses announced to Internet: 170500864 Equivalent to 10 /8s, 41 /16s and 163 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 36161 Total AfriNIC prefixes after maximum aggregation: 6971 AfriNIC Deaggregation factor: 5.19 Prefixes being announced from the AfriNIC address blocks: 52676 Unique aggregates announced from the AfriNIC address blocks: 19204 AfriNIC Region origin ASes present in the Internet Routing Table: 2001 AfriNIC Prefixes per ASN: 26.32 AfriNIC Region origin ASes announcing only one prefix: 736 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: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1366 Number of AfriNIC addresses announced to Internet: 103265024 Equivalent to 6 /8s, 39 /16s and 179 /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 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6038 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4616 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4407 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4025 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3377 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2888 182 622 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 14043 38461 5447 AMAZON-02, US 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3319 4867 493 GOOGLE-CLOUD-PLATFORM, US 749 3142 54729 2393 DNIC-AS-00749, US 16625 2854 1222 2141 AKAMAI-AS, US 36352 2820 229 904 AS-COLOCROSSING, US 174 2709 8769 861 COGENT-174, 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 7294 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3945 369 2255 M247, RO 20940 3834 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2561 182 1862 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1688 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 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 12686 3285 586 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2497 508 354 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1024 2486 56 TIM SA, BR 18881 907 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 1927 368 14 RAYA-AS, EG 36992 1824 1531 424 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1084 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1046 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 15399 547 56 55 WANANCHI-, KE 36914 547 82 3 KENET-AS, KE 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 14043 38461 5447 AMAZON-02, US 9808 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12686 3285 586 UNINET, MX 12479 7294 1711 149 UNI2-AS, ES 7545 6038 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 9498 4616 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4407 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 13330 13210 CHINAMOBILE-CN China Mobile Communications Grou 8151 12686 12100 UNINET, MX 12479 7294 7145 UNI2-AS, ES 7545 6038 5457 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4407 4383 FPT-AS-AP FPT Telecom Company, VN 9498 4616 4277 BBIL-AP BHARTI Airtel Ltd., IN 7552 4025 3997 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 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, 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 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 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 /10:41 /11:93 /12:299 /13:578 /14:1199 /15:2093 /16:13647 /17:8154 /18:13424 /19:24678 /20:44658 /21:51968 /22:112849 /23:105355 /24:640434 /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 6882 12686 UNINET, MX 12479 6225 7294 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2458 14043 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2443 2:1522 3:975 4:10 5:4977 6:187 7:6 8:1501 9:10 11:172 12:1228 13:608 14:2612 15:416 16:290 17:387 18:913 20:587 21:4 22:188 23:8067 24:2560 25:2 27:2803 29:19 31:3380 32:31 33:1 34:84 35:287 36:4619 37:4519 38:9981 39:1207 40:445 41:4495 42:1967 43:2897 44:415 45:19596 46:5081 47:393 49:2160 50:2057 51:596 52:1313 54:228 55:1118 56:11 57:301 58:2319 59:1337 60:1170 61:3087 62:3099 63:1736 64:5989 65:2124 66:5912 67:3232 68:1504 69:4177 70:1028 71:618 72:3069 74:2922 75:1508 76:597 77:2751 78:1924 79:1798 80:2298 81:2081 82:3875 83:1471 84:2015 85:3638 86:1101 87:2189 88:1355 89:4623 90:835 91:8427 92:2838 93:3014 94:4233 95:4565 96:1430 97:311 98:950 99:784 100:68 101:1340 102:4321 103:32641 104:5494 105:755 106:918 107:2814 108:1208 109:4251 110:2308 111:3976 112:2813 113:1940 114:2093 115:2274 116:2179 117:3149 118:2994 119:2089 120:2408 121:1499 122:2945 123:2276 124:1646 125:2946 126:125 128:1577 129:941 130:1535 131:2260 132:758 133:462 134:1633 135:538 136:1504 137:1218 138:3002 139:1597 140:1768 141:1563 142:2427 143:2121 144:1358 145:625 146:2181 147:2137 148:2775 149:2936 150:1324 151:2588 152:2253 153:800 154:9426 155:2280 156:4465 157:2244 158:1475 159:2724 160:3671 161:1994 162:3983 163:2320 164:1968 165:2623 166:1309 167:2188 168:3923 169:815 170:5434 171:1115 172:4519 173:3427 174:901 175:1347 176:3765 177:4723 178:4303 179:2280 180:2970 181:4346 182:3848 183:2659 184:2026 185:21660 186:5507 187:4769 188:4471 189:4486 190:9680 191:1536 192:11411 193:9501 194:7858 195:5626 196:3292 197:3277 198:6048 199:6104 200:8071 201:6380 202:10464 203:10523 204:4607 205:3685 206:4365 207:3799 208:4330 209:5456 210:4721 211:2683 212:4900 213:4027 214:1058 215:54 216:7102 217:3451 218:1603 219:410 220:2193 221:1290 222:775 223:3236 End of report