[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CENIC (R&E) view

REN Routing Table Report cscora at bgp.nsrc.org
Wed Sep 20 22:05:42 UTC 2023


IPv4 R&E Routing Table Report   22:05 GMT Wed 20 Sep, 2023

  IPv4 BGP Table (R&E) as seen at CENIC.

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/CENIC/

Analysis Summary
----------------

BGP routing table entries examined:                               24571
    Prefixes after maximum aggregation (per Origin AS):           13756
    Deaggregation factor:                                          1.79
    Unique aggregates announced (without unneeded subnets):       16306
    Number of IPv4 prefixes with a valid ROA:                     10800
    Number of IPv4 prefixes with an invalid ROA:                     15
    Number of IPv4 prefixes with no ROA:                          13756
Total ASes present in the Internet Routing Table:                  2805
    Prefixes per ASN:                                              8.76
Origin-only ASes present in the Internet Routing Table:            2412
Origin ASes announcing only one prefix:                            1068
Transit ASes present in the Internet Routing Table:                 393
Transit-only ASes present in the Internet Routing Table:             76
Paths with bogon ASNs present in the IPv4 Routing Table:              2
Average AS path length visible in the Internet Routing Table:       3.9
    Max AS path length visible:                                      15
    Max AS path prepend of ASN (395156)                              12
Prefixes from unregistered ASNs in the Routing Table:                 3
    Number of instances of unregistered ASNs:                         3
Number of 32-bit ASNs allocated by the RIRs:                      42645
Number of 32-bit ASNs visible in the Routing Table:                 638
Prefixes from 32-bit ASNs in the Routing Table:                    1949
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:              8
Number of addresses announced to Internet:                    296866304
    Equivalent to 17 /8s, 177 /16s and 210 /24s
    Percentage of available address space announced:                8.0
    Percentage of allocated address space announced:                8.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:        3145

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     4653
    Total APNIC prefixes after maximum aggregation:                2291
    APNIC Deaggregation factor:                                    2.03
Prefixes being announced from the APNIC address blocks:            4768
    Unique aggregates announced from the APNIC address blocks:     2740
APNIC Region origin ASes present in the Internet Routing Table:     543
    APNIC Prefixes per ASN:                                        8.78
APNIC Region origin ASes announcing only one prefix:                227
APNIC Region transit ASes present in the Internet Routing Table:     58
Average APNIC Region AS path length visible:                        4.2
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    204
Number of APNIC addresses announced to Internet:               47164672
    Equivalent to 2 /8s, 207 /16s and 173 /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, 131072-153913
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:                     13785
    Total ARIN prefixes after maximum aggregation:                 7822
    ARIN Deaggregation factor:                                     1.76
Prefixes being announced from the ARIN address blocks:            13434
    Unique aggregates announced from the ARIN address blocks:      9358
ARIN Region origin ASes present in the Internet Routing Table:     1277
    ARIN Prefixes per ASN:                                        10.52
ARIN Region origin ASes announcing only one prefix:                 446
ARIN Region transit ASes present in the Internet Routing Table:     169
Average ARIN Region AS path length visible:                         3.5
    Max ARIN Region AS path length visible:                          15
Number of ARIN region 32-bit ASNs visible in the Routing Table:     198
Number of ARIN addresses announced to Internet:               174557184
    Equivalent to 10 /8s, 103 /16s and 136 /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, 393216-401308
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,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  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:                      3631
    Total RIPE prefixes after maximum aggregation:                 2894
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3859
    Unique aggregates announced from the RIPE address blocks:      3199
RIPE Region origin ASes present in the Internet Routing Table:      692
    RIPE Prefixes per ASN:                                         5.58
RIPE Region origin ASes announcing only one prefix:                 304
RIPE Region transit ASes present in the Internet Routing Table:     110
Average RIPE Region AS path length visible:                         4.7
    Max RIPE Region AS path length visible:                          13
Number of RIPE region 32-bit ASNs visible in the Routing Table:     144
Number of RIPE addresses announced to Internet:                67535104
    Equivalent to 4 /8s, 6 /16s and 129 /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,
                        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:                    1444
    Total LACNIC prefixes after maximum aggregation:                573
    LACNIC Deaggregation factor:                                   2.52
Prefixes being announced from the LACNIC address blocks:           1445
    Unique aggregates announced from the LACNIC address blocks:     780
LACNIC Region origin ASes present in the Internet Routing Table:    166
    LACNIC Prefixes per ASN:                                       8.70
LACNIC Region origin ASes announcing only one prefix:                64
LACNIC Region transit ASes present in the Internet Routing Table:    26
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    67
Number of LACNIC addresses announced to Internet:               4757760
    Equivalent to 0 /8s, 72 /16s and 153 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                   1055
    Total AfriNIC prefixes after maximum aggregation:               173
    AfriNIC Deaggregation factor:                                  6.10
Prefixes being announced from the AfriNIC address blocks:          1057
    Unique aggregates announced from the AfriNIC address blocks:    221
AfriNIC Region origin ASes present in the Internet Routing Table:    49
    AfriNIC Prefixes per ASN:                                     21.57
AfriNIC Region origin ASes announcing only one prefix:               27
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   25
Number of AfriNIC addresses announced to Internet:              2782720
    Equivalent to 0 /8s, 42 /16s and 118 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 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
  2907         594       2163     466  SINET-AS Research Organization of Infor
  7497         435        180      23  CSTNET-AS-AP Computer Network Informati
  1237         192         74     141  KREONET-AS-KR KISTI, KR
  7575         177        329     120  AARNET-AS-AP Australian Academic and Re
 58647         177         18       2  KAGAWAU-AS Kagawa University, JP
  4538         130       4192      73  ERX-CERNET-BKB China Education and Rese
 55824         126         19      17  NKN-CORE-NW NKN Core Network, IN
  4621          70         37      10  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
  4762          63          4       1  MAHIDOL-BORDER-AS Mahidol University, T

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4410       4615    1986  AMAZON-02, US
 14618         816       4019     614  AMAZON-AES, US
  8075         379      12791     319  MICROSOFT-CORP-MSN-AS-BLOCK, US
   668         203        651     172  DNIC-AS-00668, US
   376         201        178     150  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  2152         142        507      92  CSUNET-NW, US
 18558         141         18       4  NETBLK-RCOEK, US
    81         127        521      30  NCREN, US
   270         118        329      82  AS270, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
   786         185       1767     182  JANET Jisc Services Limited, GB
  8895         136         24       5  ISU Internet Services Unit ISU, SA
   559         113        533     105  SWITCH Peering requests: peering at switch
  1103          94       1502      83  SURFNET-NL SURFnet, The Netherlands, NL
  2614          94         27      74  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
   553          74        465      74  BELWUE BelWue-Koordination, DE
  1930          65         81      60  RCCN Fundacao para a Ciencia e a Tecnol
  2200          64        599      59  FR-RENATER Reseau National de telecommu

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         213        176      42  Rede Nacional de Ensino e Pesquisa, BR
 28391         153         10      67  Universidad Juarez Autonoma de Tabasco,
 11340          99         24      51  Red Universitaria Nacional, CL
271640          72          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
  2715          59        102      39  Fundacao Carlos Chagas Filho de Amparo 
  4270          48         16       1  Red de Interconexion Universitaria, AR
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          43          3      14  CEDIA, EC
 28614          38          2       2  Fundacao Universidade Regional de Blume
  3596          34          4       3  Universidad Autonoma Metropolitana, MX

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2018         381        319      71  TENET-1, ZA
 36914         252         82       3  KENET-AS, KE
327687         166         28       3  RENU, UG
  8094          47         48      18  PUKNET, ZA
327700          42         16       1  MoRENet, MZ
  3208          32          2       1  ARN, DZ
  6879          24          2       9  ENSTINET-, EG
 37074          14          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37654          10          1       6  RwEdNet-AS, RW

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4410       4615    1986  AMAZON-02, US
 14618         816       4019     614  AMAZON-AES, US
  2907         594       2163     466  SINET-AS Research Organization of Infor
  7497         435        180      23  CSTNET-AS-AP Computer Network Informati
  2018         381        319      71  TENET-1, ZA
  8075         379      12791     319  MICROSOFT-CORP-MSN-AS-BLOCK, US
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
 36914         252         82       3  KENET-AS, KE
  1916         213        176      42  Rede Nacional de Ensino e Pesquisa, BR
   668         203        651     172  DNIC-AS-00668, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  7497         435          412  CSTNET-AS-AP Computer Network Information Cente
  2018         381          310  TENET-1, ZA
 36914         252          249  KENET-AS, KE
 14618         816          202  AMAZON-AES, US
  5786         197          196  UPRENET, PR
 58647         177          175  KAGAWAU-AS Kagawa University, JP
  1916         213          171  Rede Nacional de Ensino e Pesquisa, BR
327687         166          163  RENU, UG
 18558         141          137  NETBLK-RCOEK, US
  8895         136          131  ISU Internet Services Unit ISU, SA

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
45.42.252.0/22       Origin:     16509  AMAZON-02, US
45.42.252.0/22      Transit:      2152  CSUNET-NW, US
64.186.3.0/24        Origin:     16509  AMAZON-02, US
64.186.3.0/24       Transit:      2152  CSUNET-NW, US
134.208.0.0/16       Origin:     17711  NDHU-TW National Dong Hwa University, TW
134.208.0.0/16      Transit:      7539  TWAREN-TW National Center for High-perfo
170.39.88.0/24       Origin:     14618  AMAZON-AES, US
170.39.88.0/24      Transit:     16509  AMAZON-02, US
173.249.168.0/22     Origin:     16509  AMAZON-02, US
173.249.168.0/22    Transit:      2152  CSUNET-NW, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/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        /8:0        /9:1       /10:4       /11:9       /12:29      
/13:36      /14:81      /15:202     /16:2144    /17:497     /18:473     
/19:617     /20:1022    /21:1195    /22:1931    /23:2003    /24:14327   
/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
 16509         717        4410  AMAZON-02, US
 14618         265         816  AMAZON-AES, US
 36914         241         252  KENET-AS, KE
  8895         131         136  ISU Internet Services Unit ISU, SA
  8075          73         379  MICROSOFT-CORP-MSN-AS-BLOCK, US
 23024          52         113  OCDE, US
 32440          37          59  LONI, US
327700          36          42  MoRENet, MZ
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 46115          32          35  LUTHER, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:3         2:1         3:131       4:2         5:20        6:4      
   8:2        12:1        13:178      14:87       15:129      16:109    
  18:252      23:46       24:3        31:7        34:2        35:14     
  38:9        40:1        41:115      42:10       44:8        45:68     
  46:11       47:1        49:9        50:12       52:879      54:267    
  58:2        59:19       60:4        61:3        62:18       63:42     
  64:150      65:35       66:92       67:65       68:21       69:52     
  70:26       71:46       72:18       74:76       76:48       77:11     
  78:3        79:10       80:12       81:27       82:7        83:6      
  84:8        85:44       86:10       87:2        88:1        89:13     
  91:58       92:4        93:4        94:8        95:2        96:6      
  97:2        98:13       99:79      101:2       102:29      103:312    
 104:114     107:1       108:83      109:11      111:17      113:4      
 114:23      115:1       116:10      117:61      118:32      119:18     
 121:28      122:11      123:8       124:40      125:4       128:87     
 129:53      130:156     131:76      132:60      133:152     134:107    
 135:3       136:212     137:149     138:15      139:18      140:44     
 141:5       142:60      143:35      144:66      145:5       146:129    
 147:66      148:204     149:17      150:50      151:24      152:151    
 153:14      154:30      155:81      156:68      157:30      158:43     
 159:157     160:35      161:46      162:69      163:94      164:22     
 165:56      166:2       167:25      168:173     169:12      170:169    
 171:1       172:12      173:26      174:2       175:27      176:13     
 177:5       178:2       179:13      180:15      181:1       182:1      
 184:8       185:106     186:3       187:17      188:15      189:3      
 190:19      191:13      192:1553    193:314     194:139     195:90     
 196:199     197:166     198:549     199:349     200:328     201:38     
 202:639     203:443     204:400     205:168     206:215     207:202    
 208:123     209:150     210:191     211:14      212:174     213:17     
 214:8       216:180     217:10      218:22      219:5       220:16     
 222:2       223:14     

End of report


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