IPv4 R&E Routing Table Report 23:05 GMT Mon 22 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: 1021328 Prefixes after maximum aggregation (per Origin AS): 393726 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505842 Number of IPv4 prefixes with a valid ROA: 607470 Number of IPv4 prefixes with an invalid ROA: 639 Number of IPv4 prefixes with no ROA: 413219 Total ASes present in the Internet Routing Table: 77605 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66500 Origin ASes announcing only one prefix: 27072 Transit ASes present in the Internet Routing Table: 11105 Transit-only ASes present in the Internet Routing Table: 568 Paths with bogon ASNs present in the IPv4 Routing Table: 40 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 104 Max AS path prepend of ASN (329233) 100 Prefixes from unregistered ASNs in the Routing Table: 969 Number of instances of unregistered ASNs: 998 Number of 32-bit ASNs allocated by the RIRs: 48273 Number of 32-bit ASNs visible in the Routing Table: 39496 Prefixes from 32-bit ASNs in the Routing Table: 219965 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: 710 Number of addresses announced to Internet: 3105083904 Equivalent to 185 /8s, 19 /16s and 210 /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: 333334 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277435 Total APNIC prefixes after maximum aggregation: 80792 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 263641 Unique aggregates announced from the APNIC address blocks: 106358 APNIC Region origin ASes present in the Internet Routing Table: 14916 APNIC Prefixes per ASN: 17.68 APNIC Region origin ASes announcing only one prefix: 4517 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: 10500 Number of APNIC addresses announced to Internet: 753149696 Equivalent to 44 /8s, 228 /16s and 39 /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: 298464 Total ARIN prefixes after maximum aggregation: 134581 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298827 Unique aggregates announced from the ARIN address blocks: 145580 ARIN Region origin ASes present in the Internet Routing Table: 19353 ARIN Prefixes per ASN: 15.44 ARIN Region origin ASes announcing only one prefix: 7065 ARIN Region transit ASes present in the Internet Routing Table: 1925 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: 5418 Number of ARIN addresses announced to Internet: 1342824448 Equivalent to 80 /8s, 9 /16s and 224 /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: 282373 Total RIPE prefixes after maximum aggregation: 139917 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283198 Unique aggregates announced from the RIPE address blocks: 183907 RIPE Region origin ASes present in the Internet Routing Table: 29125 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12094 RIPE Region transit ASes present in the Internet Routing Table: 4050 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12884 Number of RIPE addresses announced to Internet: 735164416 Equivalent to 43 /8s, 209 /16s and 184 /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: 125904 Total LACNIC prefixes after maximum aggregation: 30855 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121705 Unique aggregates announced from the LACNIC address blocks: 49723 LACNIC Region origin ASes present in the Internet Routing Table: 11326 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2662 LACNIC Region transit ASes present in the Internet Routing Table: 2544 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: 9331 Number of LACNIC addresses announced to Internet: 170464512 Equivalent to 10 /8s, 41 /16s and 21 /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: 36183 Total AfriNIC prefixes after maximum aggregation: 6927 AfriNIC Deaggregation factor: 5.22 Prefixes being announced from the AfriNIC address blocks: 53247 Unique aggregates announced from the AfriNIC address blocks: 19689 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 26.66 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 104 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1363 Number of AfriNIC addresses announced to Internet: 103130112 Equivalent to 6 /8s, 37 /16s and 164 /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 13332 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6036 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4626 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4409 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4041 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3726 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 17561 3393 213 649 LCS-AS-AP LARUS Limited, HK 56046 3376 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3324 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2955 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 13999 38459 5439 AMAZON-02, US 22773 4778 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 174 3363 8769 863 COGENT-174, US 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2857 1223 2141 AKAMAI-AS, US 36352 2707 223 891 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3956 369 2265 M247, RO 20940 3833 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1864 CDNEXT, GB 34984 2421 371 575 TELLCOM-AS, TR 8452 1697 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 12639 3277 590 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2493 507 353 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 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1025 2486 56 TIM SA, BR 18881 903 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 1844 1536 335 ETISALAT-MISR, EG 24863 1265 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 1047 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 558 82 3 KENET-AS, KE 15399 549 56 55 WANANCHI-, 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 13999 38459 5439 AMAZON-02, US 9808 13332 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12639 3277 590 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6036 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4778 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 9498 4626 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4409 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 13332 13212 CHINAMOBILE-CN China Mobile Communications Grou 8151 12639 12049 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6036 5457 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4409 4385 FPT-AS-AP FPT Telecom Company, VN 9498 4626 4286 BBIL-AP BHARTI Airtel Ltd., IN 7552 4041 4012 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 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 21861 UNALLOCATED 12.37.59.0/24 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 23.140.216.0/24 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 /10:41 /11:93 /12:299 /13:578 /14:1198 /15:2091 /16:13649 /17:8155 /18:13424 /19:24671 /20:44664 /21:51955 /22:112910 /23:105481 /24:642089 /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 6844 12639 UNINET, MX 12479 6217 7286 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3048 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2452 13999 AMAZON-02, US 30036 2322 2665 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) ---------------------------------------------- 1:2449 2:1519 3:974 4:10 5:4981 6:187 7:6 8:1502 9:10 11:172 12:1228 13:601 14:2624 15:417 16:290 17:383 18:913 20:587 21:4 22:188 23:8054 24:2559 25:2 27:2801 29:19 31:3392 32:31 33:1 34:84 35:287 36:4616 37:4521 38:10358 39:1206 40:439 41:4513 42:1954 43:2929 44:411 45:19645 46:5087 47:394 49:2164 50:2058 51:595 52:1288 54:225 55:1128 56:11 57:307 58:2321 59:1338 60:1170 61:3086 62:3097 63:1732 64:5993 65:2123 66:5911 67:3231 68:1500 69:4178 70:1029 71:617 72:3077 74:2921 75:1515 76:597 77:2764 78:1927 79:1790 80:2298 81:2082 82:3885 83:1472 84:2025 85:3648 86:1100 87:2193 88:1358 89:4626 90:835 91:8426 92:2834 93:3013 94:4271 95:4548 96:1429 97:311 98:954 99:784 100:68 101:1337 102:4317 103:32872 104:5457 105:758 106:919 107:2801 108:1206 109:4264 110:2311 111:3971 112:2813 113:1951 114:2093 115:2267 116:2181 117:3158 118:3000 119:2093 120:2408 121:1499 122:2945 123:2281 124:1653 125:2952 126:125 128:1573 129:943 130:1530 131:2273 132:762 133:462 134:1633 135:539 136:1500 137:1214 138:3012 139:1603 140:1766 141:1560 142:2424 143:2117 144:1369 145:626 146:2180 147:2132 148:2781 149:2949 150:1332 151:2577 152:2255 153:798 154:9670 155:2274 156:4755 157:2252 158:1475 159:2726 160:3658 161:1997 162:3979 163:2329 164:1967 165:2658 166:1303 167:2197 168:3930 169:805 170:5469 171:1119 172:4525 173:3428 174:901 175:1350 176:3754 177:4797 178:4315 179:2297 180:2968 181:4349 182:3857 183:2652 184:2038 185:21685 186:5560 187:4786 188:4470 189:4474 190:9666 191:1552 192:11401 193:9500 194:7846 195:5638 196:3302 197:3269 198:6050 199:6105 200:8069 201:6389 202:10459 203:10568 204:4628 205:3695 206:4375 207:3797 208:4326 209:5442 210:4721 211:2683 212:4891 213:4012 214:1065 215:54 216:7111 217:3455 218:1604 219:411 220:2193 221:1290 222:775 223:3235 End of report